What is the crowd's opinion of Cable Matters Dual Monitor USB C Hub (USB C Dock) with Dual 4K DisplayPort, 2X USB 2.0, Ethernet, and 100W Charging - Thunderbolt 4 / USB4 / Thunderbolt 3 Port Compatible for Windows and Linux?

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I'm using this one:

https://www.amazon.com/dp/B0746NKVBN/ref=cm_sw_r_cp_apa_i_fbtEFbHJX4NHF

And it works great. I'm running one 1080p 144 hz display and one 1600x1200 at the same time with no problems.

Just make sure if you go with a USB-C adapter that you don't get a super cheap one. I started out with a cheaper one and the video stability was awful. It's definitely worth it to buy something decent.

> Will two HDMI output works same or they are not capable enough.

I'm not sure, to be honest. USB-C carries DP signal, so dual DP dock is safer bet. You can try dual HDMI, but there's a possibility one or both monitors will be limited to 1080p when used together.

> Do you know about any such usb-c dock with two DP ports.

Here's an example of dual DP dock without USB3.0.

Note that if dock has USB3.0, your DP bandwidth is halved, and you won't get anywhere near driving two QHD monitors at their native resolutions.

Oh geez thats a bit more than what I wanted to spend. Are there any cheaper soltuons? I used to use something like this for my old PC laptop:

https://www.amazon.com/gp/product/B0746NKVBN/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

Where I had two usb c cables into the laptop, one for one monitor and one for power and the other monitor.

Thanks for your reply, that's very helpful.

> For non-thunderbolt docks, in case you wanna save a bit of money or got the AMD version, you are a bit more limited, will probably need to get one with display port (HDMI seems to be more limited) and usb 2.0, like this:https://www.amazon.com/dp/B0746NKVBN/

I do have the AMD version of the E14 gen 2, I didn't know that made a difference - thanks for pointing that out! So you're saying it's hard to find a docking station with HDMI that works with AMD E14s?

You don't necessarily need a dock. Each monitor can be connected directly to the laptop via the available Displayport, HDMI or USB-C port.

Or if you want to plug fewer cables into the laptop, you could use an inexpensive dock like this to connect both monitors to the USB-C port:

https://www.amazon.com/Cable-Matters-Multiport-DisplayPort-Ethernet/dp/B0746NKVBN

Or if you have a larger budget, you can look at the Lenovo USB-C and Thunderbolt docks.

I just ordered this one along with a cheap 65 watt power supply. It has two DisplayPorts and a low price. Fingers crossed.

Cable Matters Dual Monitor USB C Hub (USB C Dock) with Dual 4K DisplayPort, 2X USB 2.0, Ethernet, and 60W Charging - Thunderbolt 3 Port Compatible for Windows and Linux https://www.amazon.com/dp/B0746NKVBN/ref=cm_sw_r_cp_api_glc_fabc_pcrZFb2CVXP1P

https://www.amazon.com/Cable-Matters-Multiport-DisplayPort-Ethernet/dp/B0746NKVBN/ref=sr_1_3?dchild=1&keywords=Dual+DisplayPort+usb+c&qid=1607223082&sr=8-3

That’s the adapter. If I need 3 monitors, then I can’t game due to power required (which is fine).

If I want to game, I move the power adapter to the other usb c port.

I’m not latency sensitive and my gaming experience is really just Overwatch, so I’m not sure I’m the best person to give the best advice. This solution works for me.

So if I were to plug the T14's 65W adapter into a USB-C dock such as this which has a passthrough offering maximum 60W power delivery, you're saying it wouldn't throttle performance even when under full load and on AC power? Will it charge at the same speed? I've never purchased a USB-C dock before, and I'm trying to understand how USB-C power delivery works. I don't want it to slow performance or degrade the battery.

What resolution are your monitors? If 4k, then a Thunderbolt is probably needed, but if lower resolution then a USB-C dock would also do the job.

If you want an inexpensive solution, you could use something like this:

https://www.amazon.com/Cable-Matters-Multiport-DisplayPort-Ethernet/dp/B0746NKVBN

Those monitors don't support DP daisy chaining. They do not have a DP output port.

To use both monitors, you'll need to connect each one directly to the laptop. For one of them, you can connect via HDMI, as you are currently doing. The other will need to connect to one of the USB-C ports. You'll need a USB-C to DP or USB-C to HDMI adapter/cable.

Or you could buy a dock, so you don't have to connect 2 video cables. For example:

https://www.amazon.com/gp/product/B0746NKVBN

With that kind of dock, you would connect both monitors to the dock, then plug the dock into one of the USB-C ports on the laptop. You'd also still need to plug your 135W power adapter into the laptop. So only two cables to deal with when you want to dock/undock.

> Do you really need USB-C dock you linked and how is it better than 60$ dock I linked https://www.amazon.com/Cable-Matters-Multiport-DisplayPort-Ethernet/dp/B0746NKVBN for you

~~It works fine tbh, I just wanted something that would deliver power to the laptop as well, which seems to drive the price of the solution up. I suppose I could just buy a separate USBC power supply and connect 2 USBC cables.~~

I spazzed out hard there, didn't realize it did USBC PD as well. Aside from Aesthetics, it would work perfectly. My bad on that one.

It doesn’t really matter whether you use DisplayPort or HDMI in your use-case. I chose that since it was cheap and has good reviews. If you prefer DisplayPort for some reason you can find a similar hub that has displayports instead of HDMI. For example, see this - not necessarily the best by any means but just the first thing I found with a cursory amazon search

If you really only need dual DisplayPort for 2x FHD display and are OK with 100 Mbps ethernet and USB 2.0 ports (fine for mouse/keyboard), you can save a lot of money and go with this Cable Matters USB-C Hub instead.

It's a really nice device and I've had no issues with it, but I can't help but feel underwhelmed given how much it costs. Keyboard feels good, screen is nice (if not just a little less sharp than 4k offerings, but this helps battery life), and the build quality is as good as it gets. And I love the minimalist, flat slab look to it.

But there are several other competitive options available now that offer more for less, like the Spectre x360, Yoga C940, and of course XPS 13. Those have their compromises as well (usually in QC), but they're also hundreds of dollars less for better specs, better port selection, and a 2-in-1 design.

I don't mind paying a premium, but the SL3 just doesn't feel future proof enough for me to do so. I actually just bought an X1 Carbon Gen 7 yesterday because they're heavily discounted for BF. With my work discount, the i7/16GB/1TB/4k model was just $1584. It's not as flashy as the other laptops I listed, but blows all of them out the water otherwise. If I hadn't got that, I probably would have looked at the Spectre next rather than the XPS.

And I only have two of my 1440p monitors hooked up to the SL3 for now, daisy chained via a single usb-c to display port cable. Haven't had any issues. Looks like I could have got the third hooked up with an adapter like this or the official surface dock.

Cable matters makes nice usb-c hubs that do everything you need and support dual monitors. They are cheaper than the official docks and work with or without thunderbolt. Cable Matters Dual Monitor USB C Hub (USB C Dock) with 2X 4K DP, 2X USB 2.0, Ethernet, and 60W Charging for Windows - Thunderbolt 3 Port Compatible

Honestly, I carry a Lenovo X1 and this CableMatters hub. We've also replaced all of our traditional docks with these things. They also make a dual HDMI version. They're great. We have a few T480's and a T490 kicking around, which IIRC have RJ45 ports. Highly recommend those models if you absolutely want the RJ45.

I haven't used that specific display, but if it has a displayport then it should work. I'm currently running both a 1080p 144hz and a 1600x1200 60 hz display through this adapter:

https://www.amazon.com/gp/product/B0746NKVBN/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

I've had no problems driving both displays through the one port at the same time. So if the question is whether the laptop will do it, the answer is yes definitely. Assuming of course that the laptop in question is a G14.

WD19/WD19S are going to support only 50% of DP1.2 bandwidth on this machine (2x HBR2 like their manual mentions) which is exactly dual FullHD that OP was complaining about, like with most USB DP dual output docks. USB3 + dual 2560x1440 60Hz won't work because 2x HBR2 (2 out of 4 DP1.2 lanes) leaves not enough bandwidth for video signal https://linustechtips.com/topic/729232-guide-to-display-cables-adapters-v2/?section=calc&H=2560&V=1440&F=120 at least without involving chroma-subsampling which is not great for work with text (dual 1920x1080 60Hz would fit, though).

Same with WD19TB/WD19TBS, if TB3 is not available. If TB3 is available - WD19TB and WD19TBS can do USB3 + dual 2560x1440 60Hz, and that's what I'm trying to ask OP to check (if TB3 is available on their SKU of 5310)

Docks with dual HDMI or dual DP and USB*2* would work for dual 2560x1440 60Hz, but USB2 is not great for everyone (like https://www.amazon.com/Cable-Matters-Multiport-DisplayPort-Ethernet/dp/B0746NKVBN, there other options - see second table for options with 2+ video outputs https://dancharblog.wordpress.com/2021/01/03/4k60-monitor-plus-usb-devices-from-single-usb-c-laptop-port/).

Dell has D3100 and D6000 that support DisplayLink, but I wanted to make sure this is actually the last path we explore due to price and technology limitations. Pretty much all available DisplayLink options are in https://www.displaylink.com/products/universal-docking-stations.

TL;DR 40a9 doesn't have bandwidth for dual 2560x1440 60Hz, cheapest replacement for dual DP connection - https://www.amazon.com/Cable-Matters-Multiport-DisplayPort-Ethernet/dp/B0746NKVBN (USB2 only though) or add another USB-C->DP dongle for second monitor ~20$ (e.g. https://www.amazon.com/gp/product/B01K51GM46 ). TB3 solutions could work too, but more expensive

If you want to stick with USB-C solutions (as opposed to TB3) and use only one connection (instead of two USB-C) ports - main factor is how much bandwidth is allocated to video by the dock for DP1.2 signal - it can be either all 4 lanes (full DisplayPort 1.2 bandwidth) but then dock has to use USB2.0 only for the rest (no USB3.0, somewhat limited Ethernet etc.) OR 2 lanes for video (50% bandwidth for DP1.2) and the rest for USB3 (proper USB3 ports on the dock, Gigabit Ethernet without artificial limits etc.). Better explanation with examples of docks for USB-C DP1.2 - https://www.bigmessowires.com/2019/05/19/explaining-4k-60hz-video-through-usb-c-hub/.

According to https://www.reddit.com/r/thinkpad/wiki/newdocks 40A9 is the second case, it only has 50% of bandwidth for DP1.2 (confirmed by 4K30Hz only statement). https://topics-cdn.dell.com/pdf/dell-wd19tb-dock_users-guide3_en-us.pdf 1440p 60Hz requires ~5.6Gbps (alternatively https://linustechtips.com/main/topic/729232-guide-to-display-cables-adapters-v2/?section=calc&H=2560&V=1440&F=60&calculations=show&formulas=show) and it's more than 1 lane of DP1.2 can handle => 2 lanes (50% of DP1.2 bandwidth) is not enough for dual 1440p config

Machines that can do DP1.4 (not X1C) get better results with docks that support DP1.4 as well (e.g. T14s AMD + 40AS). Laptops with full TB3 may provide dual DP1.2 bandwidth via one connection (e.g. recent X1C/X1Y + 40AN can do dual 4K60Hz), but there are machines that can do only 1 DP1.2 over TB3 (like T480s/T480). Also there is 40AJ - 2 USB-C connections, works with some Thinkpads (even if lacking TB3) and provides up to 1.5x DP1.2, but it physically fixes laptop in one position (not every laptop can work with it)

One like this should work fine for you: https://www.amazon.com/dp/B0746NKVBN/

I replied a similar question in this thread: https://www.reddit.com/r/LinuxOnThinkpad/comments/myv80i/which_docking_stations_would_work_with_thinkpad/?utm_medium=android_app&utm_source=share

I do not think you could solve this cheaper than https://www.amazon.com/dp/B0746NKVBN if your monitors run DisplayPort and https://www.amazon.com/dp/B0746P6LPP/ if they are HDMI. Yes, it's an MST hub but blargh I am sure he is on Windows and it's Amazon if it doesn't work there's always the return button.

The USB ports are USB 2.0 but that's a necessity for the cheap price. It's enough to plug in a keyboard and a mouse which is about 99% of use case. Forget the Ethernet port, it's useless.

If you just want to plug in two displays and don't care about USB ports then https://www.amazon.com/dp/B01DYFI1OE/ is a good choice, this one does drive two 4K displays natively. This is Thunderbolt, the previous one was USB C.

Getting fast USB and two video outputs kick this into the 180-200 USD range, let me know if you need product advice up there.

Whatever you decide on, no need to buy these specific products, just make sure the word "DisplayLink" doesn't appear anywhere. Stay away from that shit. Don't be bamboozled by how close it sounds to DisplayPort. That way only lies misery.

40AN comes in 3 versions right now, all three of them work with T480 just fine (I own 230w version 40ANY230US and use it with T480s). 135w 40AN0135US version is designed to power over TB3 only (not like X1E or P needs for fastest charging) officially supports T480 - https://support.lenovo.com/us/en/solutions/pd500265/ , but historically has more complaints for some reason (I would update firmware and drivers and if it doesn't work for you send back, BUT I tested my 40AN with 135w PSU for a couple of days and had no issues at all... TB3 docks are relatively complicated devices, maybe failure rate is higher). Newer 170w and 230w versions (starts from 40ANY and not 40AN0; comes with 1 PSU brick 170w or 230w and Y-splitting cable) would work with T480 as is because they have a splitted TB3 + slim power connector cable allowing to connect TB3 only to T480, and if you get machine with slim tip power connector later - it would support TB3+slim tip too. (but 170w and 230w 40AN versions cost a bit more)

One clarification - KVM is a thing that connects USB devices to several computers, right? we are on the same page and not talking about docks? Then that link on cheap KVM solutions shows how to "teach" monitors to switch based on what computer is active via USB (so you connect both monitors - e.g. laptop dock 40AN connected via DP+DP and computer connected via HDMI+HDMI, when KVM switch reconnects to computer - custom software sends command to monitor to switch to HDMI+HDMI and when laptop is activated - to DP+DP etc.) I don't know what KVM switch you have, it's likely unable to handle DisplayPort signal at all, would need exact link to the model even to look at specs. Hack helps using such simpler USB KVMs to manage keyboard/mouse but still reconfigure displays automatically on switching.

Do you really need USB-C dock you linked and how is it better than 60$ dock I linked https://www.amazon.com/Cable-Matters-Multiport-DisplayPort-Ethernet/dp/B0746NKVBN for you (e.g. what practical things you are missing vs my link)? See description for your link:

> DYNAMIC BANDWIDTH CONFIGURATION with an HD or 4K switch to allocate the USB-C 10Gbps bandwidth; 4K Mode supports one 4K@60Hz display or dual 4K@30Hz displays with USB 2.0 data transfer speeds; HD Mode supports dual 1920x1080@60Hz displays or one 4K display@30Hz with Gigabit Ethernet with USB 3.0 data transfer speeds; Switch to the HD or 4K Mode with this dual monitor Docking Station for your desktop requirements

So USB-C DP1.2 dock can either provide USB*3.0 + half DP1.2 (NOT enough for dual WQHD config like you have) *OR USB*2*.0 + full DP1.2 (that's the only mode that cheaper dock that I link supports and the one needed to operate dual WQHD 60Hz). See https://www.bigmessowires.com/2019/05/19/explaining-4k-60hz-video-through-usb-c-hub/ for better description on how USB-C DP1.2 docks are different. Note that your link is still USB-C dock, not TB3, and yet costs almost 200$ :O It may work if switches to USB2 as advertised, just price is a bit too much IMO. Some ideas on TB3 docks in similar to 40AN format but noname-ish and cheaper https://www.reddit.com/r/UsbCHardware/comments/inif33/wavlink_tb3_desktop_dock_sales_dual_dp_150_dphdmi/ or slightly more expensive Belkin Core https://www.reddit.com/r/UsbCHardware/comments/iniax2/belkin_thunderbolt_3_core_is_now_on_amazon_and/

https://www.reddit.com/r/thinkpad/wiki/newdocks has some relevant information, but just connecting T480 (without considering KVM part) to dual display setup with at most dual WQHD requires only 1 DisplayPort 1.2 bandwidth, options would be:

1) 4 lanes for video USB-C DP1.2 docks with 2 DP or HDMI outputs and USB*2* (a bunch of Cable Matters and others can do it e.g. https://www.amazon.com/Cable-Matters-Multiport-DisplayPort-Ethernet/dp/B0746NKVBN, but watch out for USB3 docks - those won't work as they provide only half DP 1.2 bandwidth)

2) 40AJ with dual USB-C connection (USB3, up to 1.5x DP1.2 bandwidth from 2 USB-C connections to laptop, fixes laptop in a nice position). compatible with your T480 https://support.lenovo.com/us/en/solutions/pd500173/, but this setup is made for some Thinkpads only (proprietory dock that relies on shape of chassis and position of ports, not usable for MacBook etc.)

3) TB3 docks like 40AN (somewhat expensive but gives you USB3 and full DP1.2 bandwidth at the same time via 1 cable). This is usually the most expensive option, especially new, and benefits for T480 are limited.

Not sure about KVM, do you want to connect to the desktop computer with the same monitors and switch easily between laptop and desktop? there is a software/hardware cheap hacky solution https://www.reddit.com/r/UsbCHardware/comments/iqcqnb/dock_for_two_computers/g4shp1o?utm_source=share&utm_medium=web2x&context=3 . more proper hardware solutions may exist (search this and UsbCHardware subs), but I have no experience with it + expensive

AFAIK odd resolutions are more of a problem for iGPU if it all (if monitor handles it, at worst manually typing it in should work). For docks it's important that there is enough bandwidth available, especially considering T480 can do only one DP1.2 via one TB3 or USB-C connection (e.g. dual 4K60Hz requires two connections in TB3 and USB-C on the laptop at the same time)

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https://www.amazon.com/dp/B0746NKVBN?_encoding=UTF8&psc=1&ref_=cm_sw_r_ud_dp_92YP1MCVX4FRTPBMN6Q4

That one worked for me

I use this dock, it outputs 2560x1440 to two monitors and passes through charging if you have a usb pd charger

https://www.amazon.com/dp/B0746NKVBN?psc=1&ref_=cm_sw_r_ud_dp_5ECACQSCP0JXBC7Q668Q

You can't achieve full resolution + refresh rate for your monitors natively with T590 and a single USB-C connection, at least without involving eGPU. T590 is based on a more limited Intel JHL6240 Alpine Ridge LP controller, so about one 4K 60Hz + USB3 works with TB3/4 docks at best. See https://www.reddit.com/r/thinkpad/wiki/newdocks.

Using one dock with USB2 should support 4K 60Hz + 1920x1080 60Hz as is. See https://dancharblog.wordpress.com/2021/01/03/4k60-monitor-plus-usb-devices-from-single-usb-c-laptop-port/ "4K60 USB-C HUBS FOR LAPTOPS WITH DP 1.2" table and filter for 2+ video outputs, e.g., https://www.amazon.com/Cable-Matters-Multiport-DisplayPort-Ethernet/dp/B0746NKVBN (2 USB2 Type-A + somewhat slowed down Ethernet). Chroma subsampling, or reducing refresh rate (and maybe tweaking timings) a bit might be enough to get 4K + 2560x1440. Similar can be done with TB3/4 docks that have MST (Lenovo 40AC, 40AN, 40B0) but are expensive for your laptop that's incapable to utilize TB3/4 docks at full potential.

Dual USB-C connection like with Lenovo 40AJ mechanical should work for your case, but not everyone likes mechanical docks.

Or the second monitor could just go via a second USB-C port (USB-C to DP cables are ~20$) to support 4K 60Hz, then even your current dock could handle USB3 + 2560x1440 60Hz (assuming it's a DP Alt Mode dock)

If refresh rate is 60 Hz, no problem. You didn't mention whether you have the Intel or AMD variant, but at that resolution and refresh rate, no problem with either.

I believe UGREEN is ... maybe OK. Not the best, but should work. As always, buy from a vendor with a good return policy 😛

The Intel supports DisplayPort 1.2 (via its Alpine Ridge JHL6240 Thunderbolt (TB) 3 host controller, I believe) and the AMD variant supports DP 1.4. Both support dual 1080 at 60 Hz, however.

It seems like you should be able to get a single-cable solution. Namely, power delivery, USB 3.0, and dual video output.

Do you game and need G-SYNC (?) Or just office apps?

Is USB3 (5-10 Gbit/s) a need or is USB2 speed OK (480 Mbit/s)?

Do you want a portable hub (e.g., https://www.amazon.com/Cable-Matters-Multiport-DisplayPort-Ethernet/dp/B0746NKVBN) or a desktop-class dock (e.g., https://support.lenovo.com/us/en/solutions/pd029622-display-and-video-output-configurations-docking-stations) (?)

What market are you in (?) E.g., USA, Germany, UK. Sometimes that constrains choices.

Dan Charlton has a list of portable hubs here:

https://dancharblog.wordpress.com/2021/01/03/4k60-monitor-plus-usb-devices-from-single-usb-c-laptop-port/

If you're not price sensitive, I'd suggest going with Thunderbolt 4, as the newer hardware is backwards compatible and will serve you moving forward for longer. You can cut costs by going with non-OEM equipment (e.g., Cable Matters, CalDigit).

What to avoid:

• DisplayLink
• MST splitter (just video, no USB data)

tl;dr <100$ (based on US prices) are available - but it's either used simpler TB3 docks like that Monoprice or non-Thunderbolt devices with some more limitations (some are USB2-only or no USB at all, others with USB3 may work only if you have 20-series GPU and DSC works via USB-C/TB3 port). if the price doesn't deter you - I would try CalDigit Element Hub or a similar TB4 dock first (return options are always good for safety though; but 250$+ for new devices is a steep price).

>Hp Omen 15-dh0007na

That's an interesting laptop, too bad I cannot find schematics for it. If you connect a monitor to TB3/USB-C - it does show up as connected to NVIDIA GPU in the NVIDIA control panel, right? (related tab looks like https://imgur.com/a/dxv2JPN, it should show NVIDIA GPU connected to external monitor)

Specs mention 1 USB 3.1 Gen 2 Type-C™ with Thunderbolt™ 3 (40 Gb/s signaling rate, DisplayPort™ 1.4, HP Sleep and Charge) - so from DP1.4 mentioned I suspect dGPU drives the TB3 port (GeForce 2070?) + reports from egpu.io and https://linux-hardware.org/index.php?probe=29cb9464ae on similar Intel HP Omen 2019 machines suggest that TB3 controller is JHL6340 (those are capable to drive dual-SST on TB3/4 docks, but claims on DP1.4 support with Alpine Ridge controller are a bit suspicious; hopefully, it doesn't interfere with DSC for GeForce 20-series at least, even if HBR2 only on DP Alt Mode docks). DP1.4 dGPU via Alpine Ridge TB3 controller is not very common.

So in addition to TB4 (and TB3) options (CalDigit Element Hub, https://www.owcdigital.com/products/thunderbolt-hub, etc.), there are DP Alt Mode options (price is more adequate but more limited in capabilities; won't support G-SYNC for sure even if the laptop does for external monitors) - https://www.cablematters.com/pc-940-126-usb-c-dual-monitor-hub-with-dual-4k-displayport-2x-usb-20-fast-ethernet-and-60w-power-delivery.aspx (https://www.amazon.com/Cable-Matters-Multiport-DisplayPort-Ethernet/dp/B0746NKVBN) should be able to do dual 1920x1080 144Hz or close to it, same with https://www.amazon.com/Cable-Matters-Display-DisplayPort-Charging/dp/B07XYCHGQM or https://www.amazon.com/Cable-Matters-201375-BLK-Docking-Stations/dp/B0874V465W (no USB ports; alternatively https://www.amazon.com/Cable-Matters-101075-BLK-Computer-adapters/dp/B0874V968M via laptop's miniDP to not waste TB3 port on 2 monitors and nothing else). If you have GeForce 20-series - you could try https://www.cablematters.com/pc-1295-126-usb-type-c-multiport-adapter-with-triple-displayport-pd.aspx (availability is dodgy nowadays, but has USB3; it relies on DSC to get close to your requirements and therefore GeForce 20-series or up is important)

Yes, but not with every dock (USB-C with DisplayPort 1.4+DSC allows dual 4K 60Hz + USB3 on newer DP Alt Mode machines, despite no Thunderbolt 3/4/USB4) - e.g., https://www.amazon.com/Cable-Matters-Multiport-DisplayPort-Ethernet/dp/B0746NKVBN (only pass-through charging and below 95W even with 100W charger connected). If you only need to run monitors - https://www.amazon.com/Cable-Matters-Display-DisplayPort-Charging/dp/B07XYCHGQM (MST hub that supports DisplayPort 1.4 and DSC)

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If you need USB ports working on both monitors and not invest much - "2 USB-C cables" is probably the most straightforward approach. https://www.amazon.com/Cable-Matters-Multiport-DisplayPort-Ethernet/dp/B0746NKVBN + PD charger for power pass-through will be like extra 50-100$ - you could connect both monitors via DisplayPort + USB cables to the dock (like desktop PCs are expected to be connected, looking at the manual - P27h-20 and T27h-20 should support "data" via Type-C to Type-A cable + DisplayPort input) - then you will get USB2 + 2560x1440 60Hz working on both monitors (since dock will limit to USB2). The dock's pass-through charging will allow charging the laptop. Or you could do even cheaper https://www.amazon.com/gp/product/B06Y5N3YCD + daisy chain monitors via DP and connect USB2 via USB-C input on the monitors the same way. (availability of USB2-only docks is problematic today, check eBay)

Significantly more than dual 2560x1440 60Hz (e.g., 4K 60Hz + 2560x1440 60Hz) won't fit in single DP1.2 - daisy-chaining will still be limited by DP1.2 bandwidth limit at best between the first monitor in the chain and the laptop.

And even dual 2560x1440 60Hz requires the first monitor to support daisy chaining when on USB-C input + switch its USB ports to USB2-only mode (4x DP lanes + USB2). AFAIK manuals are not specific for both monitors to call it out clearly if it works for dual 2560x1440 60Hz + USB2 - https://download.lenovo.com/consumer/monitor/t27h_20_ug_en.pdf https://download.lenovo.com/consumer/monitor/thinkvision_p27h_20_ug_en.pdf, maybe r/thinkpad has someone with those monitors to try. Some Dell monitors have a "Resolution Priority" OSD option for similar cases (4x DP lanes for full DP1.2 bandwidth + USB2).

We discussed alternative options 3 months ago - https://www.reddit.com/r/UsbCHardware/comments/ogi6f2/comment/h4klpxw/?utm_source=share&amp;utm_medium=web2x&amp;context=3. (tl;dr docks, including USB2-only cheaper ones https://www.amazon.com/Cable-Matters-Multiport-DisplayPort-Ethernet/dp/B0746NKVBN - might be still available on eBay)

Thank you so very much for your painstakingly detailed answer!

Based on your answer and some more research I did, I think I'll avoid the TB16 since it seems to be such a mixed bag.

I am in Canada.

The Cable Matters dual 4K Displayport Multiport Adapter 201055 I mentioned is this one. It's not TB3 but it apparently supports DP MST and only uses USB 2.0 but has 2x Displayports, which should allow for the 1440p and 1080p monitor to display full resolution at 60hz, yes?

From your recommendations I am considering the HP Thunderbolt G2 dock, which someone locally is selling for around $35 USD but without the Thunderbolt cable. Will a 3rd party TB3 cable work with my T580?

I also have the choice of buying a HP Elite Thunderbolt 3 Dock 65W for an even cheaper price. This one includes the TB cable to connect the dock to my ThinkPad (has a normal USB-C head on one side, and the combo USB-C & barrel plug on another side like this). I've heard reports of this dock working poorly with non-HP laptops, but those reports are from a few years ago. Additonally, another user online claims he's used this very dock with the T580, whereas the G2 dock doesn't work so well.

This is all rather confusing to me, so I apologize for inundating you with questions. You've been immensely helpful already!

Sigh, Startech products. You've fallen for their marketing efforts and likely wasted a lot of money. Hopefully you can return it. Even if your laptop supported the features -- which it doesn't -- Startech products are woefully overpriced.

Anyways, https://ubuntu.com/certified/202005-27938/18.04%20LTS this is your laptop, it has the Alpine Ridge LP as all the T/X2 series before since T470/X270 so you only have one DisplayPort worth on the Thunderbolt bus.

However, as I mentioned, you have fallen for Startech bamboozle, you don't need Thunderbolt at all for two FHD monitors. https://www.amazon.com/Cable-Matters-Multiport-DisplayPort-Ethernet/dp/B0746NKVBN will do. It has a renewed and a dual HDMi version too. Should you need USB 3.0 we can work that out too. Even that fits the bandwidth budget. https://www.reddit.com/r/thinkpad/wiki/newdocks

Cable Matters 201055 (2 DP)
https://www.amazon.com/dp/B0746NKVBN

Cable Matters 201056 (2 HDMI)
https://www.amazon.com/gp/product/B0746P6LPP/

Both have 2 USB A, Power Delivery (up to 60 watts), and Ethernet (up to 100 Mbps)

There's a good article in thinkpad's sub wiki:https://www.reddit.com/r/thinkpad/wiki/newdocksAny dock should work fine with linux. If you have intel, you can probably use a thunderbolt dock, although expensive, will get you more speed and would be capable of plugging more screens.

For non-thunderbolt docks, in case you wanna save a bit of money or got the AMD version, you are a bit more limited, will probably need to get one with display port (HDMI seems to be more limited) and usb 2.0, like this:https://www.amazon.com/dp/B0746NKVBN/

I ordered similar one from the same brand, with just one 4k@60 output and it did not deliver 60W for charging, it was more like 40W, which would make my laptop freeze every so often. So I ended up returning it, and I know use a ultra wide screen with USB-c hub integrated, and is the only cable I need in my desk. It might be an option for you if you still didn't buy the screens. One 34" WQHD (3440X1440) equal one and half 27" screens.

Latitude 5410 can be USB-C-only or TB3 with DisplayPort 1.2. Can you check what variant do you have via BIOS - https://www.dell.com/support/kbdoc/en-us/000130984/some-systems-with-usb-type-c-port-lack-a-thunderbolt-3-controller?

If it's USB-C-only (or you want to stick with cheaper USB-C-only docks) - dual WQHD 60Hz can be combined only with USB2 (https://www.bigmessowires.com/2019/05/19/explaining-4k-60hz-video-through-usb-c-hub/ - 4K 60Hz has similar bandwidth requirements to dual 2560x1440 60Hz, once monitor require more than half of DisplayPort 1.2 bandwidth - USB-C-only docks will need to be 4 lanes for video + USB2 to work; and 11.59Gbit/s is more than 0.5 * 17.28Gbit/s). And USB-C-only docks with USB2 rarely come with detachable USB-C cable (e.g., https://www.amazon.com/Cable-Matters-Multiport-DisplayPort-Ethernet/dp/B0746NKVBN has no detachable cable). Universal TB3 / USB-C docks do have detachable cable frequently, but if your Latitude 5410 has no TB3 - they will work as 2 lanes for video + USB3 (and you will get the same issues with not attainable dual WQHD 60Hz). You could move one monitor to the laptop's HDMI instead.

T480 has TB3 and USB-C with DisplayPort 1.2. 40AS as a USB-C dock will run only with half DP1.2 bandwidth total (the other half is not available due to 2 lanes out of 4 assigned to USB3 - https://www.bigmessowires.com/2019/05/19/explaining-4k-60hz-video-through-usb-c-hub/). Half of the DP1.2 bandwidth is enough for a single 3440x1440 or 2560x1440 60Hz or dual 1920x1080 60Hz, but not more (2560x1440 60Hz needs 5.63 Gbit/s + 1920x1080 60Hz needs 3.2 Gbit/s => 5.63 + 3.2 = 8.83Gbit/s and half of DP1.2 has 0.5 * 17.28Gbit/s = 8.64Gbit/s; so at least with standard timings it's not enough to run 2560x1440 + 1920x1080 60Hz on 50% DP1.2). See the last table in https://support.lenovo.com/us/en/solutions/pd029622-display-and-video-output-configurations-docking-stations#USB-C%20dock%20Gen%202 (dual 4K is possible on DisplayPort 1.4 + DSC systems like T14 AMD with Ryzen 4000, not on DisplayPort 1.2 systems). 40AN or 40AH/40AJ would be a better match, or if you don't need USB3 - https://www.amazon.com/Cable-Matters-Multiport-DisplayPort-Ethernet/dp/B0746NKVBN (USB-C-only dock with USB2 can handle full DP1.2 bandwidth, since it doesn't waste 2 out of 4 lanes for USB3).

Another IT computer-toucher-manager here - over the past 18 months I've rolled out these Cable Matters docks to everyone: dual DVI and dual HDMI. I have had zero complaints and have not had to replace or return any of them. And they're less than half the price of most of the OEM options we have tried.

Thinkpad L480 has only USB-C with DisplayPort 1.2. With Lenovo 40AS dock you get half of DP1.2 bandwidth + USB3, which is not enough to drive 3440x1440 + 1920x1080 at 60Hz. The article on USB-C-only docks here explains it in more detail, but you would need a different dock that supports 4 lanes for video + USB2 (not USB3) to make it work via a single cable (like this).

The easiest solution since you already own Lenovo 40AS (and buying another dock with 4 lanes for video + USB2 is wasteful) - connect 2nd monitor via https://www.amazon.com/Cable-Matters-USB-DisplayPort-Adapter/dp/B07F17ZHJY into 2nd USB-C port (or USB-C to DP cable, or HDMI1.4 port on the laptop).

> 1440p Dell monitor at 60Hz (for now) and maybe add another 1080p monitor later. Will the 40AS able to provide me this?

No. T480 is DisplayPort 1.2 only, 40AS provides only 50% bandwidth of DP1.2 + USB3. Therefore 2560x1440 60Hz will work (5.63 Gbit/s bandwidth fits under 50% of DP1.2 limit 17.28 Gbit/s), but not 1440p 60Hz + 1080p 60Hz (because extra 3.20 Gbit/s bandwidth for 1080p makes it narrowly go over the limit).

USB-C-only docks that provide dual DP (or dual HDMI variant) + USB*2* (because they have full DP1.2 bandwidth assigned to video) would work, though. Or you can use a proper TB3 dock (e.g. Lenovo 40AN, or used 40AC) to get full DP1.2 + USB*3* via one cable to the TB3 port on T480.

You can also move one monitor to HDMI on the laptop or add a 20$ USB-C to DP adapter in the 2nd USB-C port.

Dell TB16 doesn't seem to specify the speed of its USB3 - see manual. Not clear what happens when you connect the USB-C-only devices into their downstream TB3 ports. If it's critical for you - I can try to probe my docks for this in ~1 week (I have eBay-friendly 40AN, 40AC, and TB16 docks)

This totally depends on what you mean by a "hub". Very few docks/hubs with output USB-C ports can drive a display (they are for data only usually). All examples I know are expensive (>100$). Don't assume that anything with a USB-C output port will drive a monitor via USB-C to DP. https://www.amazon.com/Cable-Matters-Multiport-DisplayPort-Ethernet/dp/B0746NKVBN can be connected to either USB-C port of T15 Gen1 and provides two DisplayPort outputs (that should be connected with DP-to-DP cables to monitors).

1080p 144Hz + 60Hz should fit into 1x DisplayPort 1.2 bandwidth and some USB-C docks (e.g., dual DisplayPort + USB2 like https://www.amazon.com/Cable-Matters-Multiport-DisplayPort-Ethernet/dp/B0746NKVBN) should be enough.

It's better to know your exact laptop model to verify the best option. Some laptops don't even support DisplayPort over USB-C at all (while still have USB-C ports) and won't work with the suggested dock. Also, what OS do you use? (macOS requires TB3 dock for multi-monitor setups).

Bandwidth needed to drive monitors is the important starting point - see calculator - dual 1080p 144Hz barely fits in DisplayPort 1.2. Lowering the refresh rate helps to lower bandwidth, of course.

Specs for laptop show Thunderbolt 3 with DisplayPort 1.2. Appears to use Alpine Ridge controller (validated by probe here). Therefore it should be able to support up to dual DP1.2 bandwidth + USB3 with TB3 docks. Current official dock - Dell WD19TB (it appears to provide proprietary 130w charge over TB3 for 9550 as well), but there are other TB3 docks if the slower charge is OK.

For USB-C (non-TB3) docks you can get full DP1.2 bandwidth only if degrading to USB2 (not USB3). Example with 60w charge for 60$ here. Explanation why USB2 - in the article.

40AN will work in 2 lanes for video (50% DisplayPort bandwidth) + USB3 mode with USB-C-only hosts, see official tables. It's enough for one 2560x1440 60Hz (see bandwidth calculator), but not clear if two 2560x1440 60Hz will work - needs DP1.4 for that (should work with X395 since it's capable of driving DP1.4, but may depend on monitor model - needs testing ideally). For T480 and T570, it would be full DP1.2 bandwidth + USB3 (since they have TB3, specifically Alpine Ridge LP controller), enough for dual 2560x1440 60Hz.

40AS would do the same for USB-C-only machines and TB3 machines - 2 lanes for video + USB3. Therefore it lacks the ability to do full DP1.2 for T480 and T570 via a single cable.

Consider cheaper USB-C 4 lanes for video + USB2 adapters like this if USB2 is enough. Another option - adding a second monitor via second USB-C port (not for T570 since it has one port?) with a 20$ dongle and using one of the USB-C docks like 40AN or cheaper ones like 2 lanes for video Anker.

PS: Background on USB-C docks here and here, wiki on docks, blog post on USB-C and TB3.

PS2: 40AJ and 40AH are not compatible with T570, unfortunately.

> I really only need a dock that will charge it and then project it on to dual monitors.

Any USB-C dock will do: https://support.lenovo.com/us/en/solutions/pd029622

This is probably the most common: https://www.lenovo.com/us/en/accessories-and-monitors/docking/universal-cable-docks-usb/TP-USB-C-DOCK-GEN2-US/p/40AS0090US

If you’re paying for this yourself, then any of these $50-$60 Cable Matters hubs should do the trick. Pick whichever suits your monitor config best.

HDMI (80W): https://www.amazon.com/gp/aw/d/B07XSGG2M3/

DisplayPort (60W): https://www.amazon.com/gp/product/B0746NKVBN/

HDMI / DisplayPort / VGA (60W): https://www.amazon.com/Cable-Matters-Multiport-Adapter-Ethernet/dp/B076TRGGM6/

Note that I think you’ll need to have your laptop power adapter plugged into these hubs in order to charge the T14.

> I really only need a dock that will charge it and then project it on to dual monitors.

Any of these $50-$60 Cable Matters hubs should do the trick. Pick whichever suits your monitor config best.

HDMI (80W): https://www.amazon.com/gp/aw/d/B07XSGG2M3/

DisplayPort (60W): https://www.amazon.com/gp/product/B0746NKVBN/

HDMI / DisplayPort / VGA (60W): https://www.amazon.com/Cable-Matters-Multiport-Adapter-Ethernet/dp/B076TRGGM6/

Note that I think you’ll need to have your laptop power adapter plugged into these in order to charge the T14.

Here’s all the info about ThinkPad-branded options if you’d like to rejoice at how much $$$ you’re saving: https://support.lenovo.com/us/en/solutions/pd029622

> I really only need a dock that will charge it and then project it on to dual monitors.

Any of these ~$60 Cable Matters hubs should do the trick. Pick whichever suits your monitor config best —

HDMI: https://www.amazon.com/gp/aw/d/B07XSGG2M3/

DisplayPort: https://www.amazon.com/gp/product/B0746NKVBN/

HDMI / DisplayPort / VGA: https://www.amazon.com/Cable-Matters-Multiport-Adapter-Ethernet/dp/B076TRGGM6/

Here’s all the info about ThinkPad branded options ($$$): https://support.lenovo.com/us/en/solutions/pd029622

https://www.amazon.com/gp/product/B0746NKVBN

There's an option to power it via USB-C that I of course don't use due to laptops blowing up if you charge with the charge and via type-C.

what monitors do you have? dual FHD 60Hz + USB2.0 can be done for 60$ - https://www.amazon.com/gp/product/B0746NKVBN , USB-C is usually much cheaper than TB3. but your machine has good support for TB3 and can do slightly more with it - see https://www.reddit.com/r/thinkpad/wiki/newdocks e.g. dual 4K 60Hz can be done with 1 cable over TB3 even with 40AN and you can charge via proprietary connector with 40AN variation with bigger PSU and splitted Y-cable (e.g. 40ANY230US) https://support.lenovo.com/us/en/solutions/pd029622#Thunderbolt%203%20Workstation%20Dock https://support.lenovo.com/pl/en/solutions/pd500252

1440p + 1080p 60Hz + USB 2.0 + 60w charge can be done for 60$ https://www.amazon.com/gp/product/B0746NKVBN . cannot test 1440p+1440p with this 60$ dock, but likely would work too. but not with USB 3.0, then you need DP1.4 and among DP1.4 docks Type-C Dock (Gen-2) 150$ price IMO is fair.

to reiterate Type-C Dock Gen2 can do dual 1440p 60Hz or dual 4K 60Hz with DP1.4 machines based on their documentation and the article about DP1.4 via USB-C.

you could also wait on new Lenovo Thinkvision monitor to arrive and test. maybe it can do DP1.4 and the specs are messed up

Not sure if this has enough USBs for your scenario, but this is what I use:

https://www.amazon.com/gp/product/B0746NKVBN/ref=ppx_yo_dt_b_asin_title_o07_s00?ie=UTF8&amp;psc=1

I mostly was worried about the screens, as my only other peripheral is a mouse. And for me it's working great. The video stability is perfect. I haven't had a single issue with it so far.

I initially bought this one:

https://www.amazon.com/gp/product/B082WT3FL4/ref=ppx_yo_dt_b_asin_title_o09_s01?ie=UTF8&amp;psc=1

And I would advise you to steer clear. It was nice to have all the ports, but the display capabilities were annoying for general use, and made gaming impossible. Sometimes half of my screen would flicker, sometimes video would drop out altogether for a few seconds. Not worth the money.

The "Cable Matters" one that I listed first has been really great, and I highly recommend it if display consistency is a priority and you can get by with two USBs. I run two screens plus the laptop screen. One 1920x1080 at 144 hz, and the other 1600x1200 at 60 hz. And this drives them both no problem.

tl;dr https://www.amazon.com/Cable-Matters-Multiport-DisplayPort-Ethernet/dp/B0746NKVBN will allow dual 1440p 60Hz or a bit more but not even dual 100Hz (assuming it's a DP1.2 machine)

If laptop supports only DisplayPort 1.2 over USB-C (https://psref.lenovo.com/syspool/Sys/PDF/ThinkPad/ThinkPad_E495/ThinkPad_E495_Spec.PDF kind of doesn't specify it, but shows 4K 60Hz as max which suggest it's likely 1.2?) => only dual 1440p ~60Hz will work and total bandwidth limit for DP1.2 MST you are looking for is 17.28 gbps (see http://linustechtips.com/main/topic/729232-guide-to-display-cables-adapters-v2/?section=calc&amp;H=2560&amp;V=1440&amp;F=120&amp;calculations=show&amp;formulas=show , so it can squeeze a bit more than dual 60Hz but not even 100Hz on both).

the same hub driving monitors will only be able to provide USB2 since all 4 lanes need to go to video - see explanation why https://www.bigmessowires.com/2019/05/19/explaining-4k-60hz-video-through-usb-c-hub/

extra info: https://www.reddit.com/r/thinkpad/wiki/newdocks https://drupalusbcandmore.blot.im/usb-c-is-a-physical-connector

I have 40AS and 40AN docks, note that 40AS appears to provide only 2 lanes for video (half DP1.2 bandwidth) + USB3 on USB-C DP1.2 capable machines (x1c gen8, t14 intel) and will be able to support only one 1440p 60hz or dual 30Hz. unless you go with AMD machines - TB3 dock like 40AN can do more including dual 1440p 60Hz + USB3.

alternative - USB-C dock that has 4 lanes for video DP1.2 + USB*2*. this works on anything that can handle USB-C DP1.2 (including cheaper non-TB3 Intel machines like L380 and newer T14 AMD, except machines on macOS though - those will need TB3 daisy chaining or multiple usb-c connections for any multi-monitor setup). example for 2 DP monitors - https://www.amazon.com/Cable-Matters-Multiport-DisplayPort-Ethernet/dp/B0746NKVBN . 60$ and will support dual 1440p 60Hz, albeit with USB2 only.

usual reason to get 40AS - when you have DP1.4 machine without TB3, e.g. T14 AMD or similar and you want to get both higher DP bandwidth (like for dual 1440p or single 4K 60Hz) and USB*3* at the same time. won't work on DP1.2 machines as nice.

PS: more info on DP1.2 over USB-C - https://www.bigmessowires.com/2019/05/19/explaining-4k-60hz-video-through-usb-c-hub/ , difference vs DP1.4 relevant for newer AMD Thinkpads https://dancharblog.wordpress.com/2019/10/10/dual-4k-60hz-monitors-via-usb-c-with-displayport-1-4/

As https://www.reddit.com/r/thinkpad/wiki/newdocks mentions (I wrote it, I can quote it freely :D )

> The "ThinkPad Thunderbolt 3 Workstation Dock" and the "ThinkPad Thunderbolt 3 Dock Gen 2" is the exact same 40AN dock. The Workstation Dock ships with a 170W or a 230W adapter and a special cable: two plugs (one power, one USB Type C) in a plastic shell so you need to plug one cable. Since the X1 Extreme / P1 / P52 / P72 need more than 100W to charge when fully loaded, there is no question which dock to buy for those if single plug docking is a requirment

That dock is 120 USD on eBay without an adapter, to get a cheap adapter look for a 170W W540 or W541 adapter on eBay, that's another 20 USD (get one from the US not China and an original, used one).

Otherwise, use https://www.amazon.com/dp/B0746NKVBN/ and plug your power brick separately. The 1080p @ 144Hz uses 8Gbit/s and fits the bandwidth budget of this particular adapter. HDMI is possible as well but you need to look carefully at spec whether the monitor is willing to do 1080p @ 144Hz w/ HDMI 1.4 , it fits the HDMI 1.4 bandwidth with CVT-R2 timing but not with CVT-RB. No reason of course an LCD panel needs even R2 but hey monitor manufacturers are stupid and might artificially block the 144Hz refresh rate when HDMI is used. Just because it has a charging capability doesn't mean you actually need to plug a USB C power brick in there and if you would, the ThinkPad wouldn't ask for power from it as long as the slim tip is plugged. All this doesn't affect battery life.

update: missed your monitors have DP

Cable Matters has dual DP USB-C DP1.2 + USB*2* https://www.amazon.com/Cable-Matters-Multiport-DisplayPort-Ethernet/dp/B0746NKVBN , so if usb2 is fine it's enough. StarTech has slightly more expensive full/half DP1.2 + USB2/3 (dual mode - in USB3 mode still enough to drive dual FHD afaik) https://www.amazon.com/StarTech-com-Monitor-Multiport-Adapter-DisplayPort/dp/B07JZHVKFJ . Anker likes to make dual port HDMI only afaik, you would have to add some dongles which drives price up. Cable Matters doesn't seem to make DP1.4 docks yet (they already have MST hubs, probably question of time) so you cannot get, say, dual WQHD + USB3 with Cable Matters on machines with DP1.4 (so considering risk you will upgrade to dual WQHD later - I would rather get full DP1.2 + USB2 if you have to go with Cable Matters, but this is up to you)

generally when there is a significant disconnect between laptop and monitors age - there is also high chance you will want to upgrade monitors soon :) right now you are probably thinking let's make this darn thing work at all, but a couple of months passes and older FHD vs newer laptop will start looking suboptimal etc. etc. if this is the case -better to think through what is likely next monitor pair you will want. this is why I'm thinking about possibility of dual WQHD for you later.

it has usb-c with DisplayPort and Power Delivery, https://www.reddit.com/r/laptops/comments/hqutrz/any_reviews_on_dell_vostro_5401/g0zom6r?utm_source=share&amp;utm_medium=web2x&amp;context=3 mentions it's DP1.4 too (cannot find official specs confirming it). either way any usb-c DP1.2 with even half-bandwidth to DisplayPort can handle dual 1080p 60Hz.

Dock you found would work (since it USB-C and not Thunderbolt 3) - https://www.amazon.com/dp/B0746NKVBN , but note that it's made to support DP1.2 and USB2 only. If USB2 and somewhat slower Ethernet is fine - it should work.

I believe Anker would be nicer for dual HDMI FHD here - https://www.amazon.com/Anker-PowerExpand-Adapter-Delivery-Ethernet/dp/B0874M3KW4 (it provides USB3 and afaik even for DP1.2 machines dual FHD works with it, if you have DP1.4 like another post stated - it can do even slightly more). If you don't need power or other connectors - there is https://www.amazon.com/dp/B0894B525X that uses full DP1.4/1.2 bandwidth ("up to 4K@60Hz for laptops with support for DP 1.4, or up to 4K@30Hz for laptops with support for DP 1.2") - but I guess charging is a must? A bunch of other options designed for USB-C DP1.2 would work, pretty much anything that has 2 ports (even if provides USB3 and 2 lanes for video DP1.2 - in your case dual FHD works, see https://www.bigmessowires.com/2019/05/19/explaining-4k-60hz-video-through-usb-c-hub/, but avoid DisplayLink adapters.

If you are thinking about upgrading displays later to fancier setup - may make sense to account for it ^. (e.g. https://www.amazon.com/Anker-PowerExpand-Adapter-Delivery-Ethernet/dp/B0874M3KW4 can do at best dual 4K@30Hz on DP1.4, not great if you planned to upgrade later)

Your monitors are 1440p 60Hz and support USB-C DP with USB3.0 hub -https://support.lenovo.com/us/en/solutions/pd104863/. Daisy chaining may get tricky (there are some complaints on 27" variant depending on firmware version + not clear if it works in USB-C + Daisy Chaining, since it's MST DP - definitely won't work for macOS too), but otherwise 1 or 2 USB-C or HDMI directly from X1C (I suppose it's a newer one with USB-C DP1.2 - gen6+ should be fine for sure) and 1 or 2 miniDP->DP cables + HDMI would work. You would have to replug 2 cables and only X1C will charge via USB-C. You can do both monitors with 1 USB-C cable with https://www.amazon.com/gp/product/B0746NKVBN for X1C only (and also Tb3 solutions like 40AN, but they are expensive). So here's some ideas for cheaper mix and match:

Single USB-C DP1.2 -> DP dongles with charge: https://www.amazon.com/gp/product/B07FF63XZ9 (for X1C to add one more display in addition to HDMI). But try if direct connection via USB-C cable works - it should work for single monitor on X1C for sure, since monitors support USB-C DP1.2

miniDP -> DP cables for MBP 2013 (loads of different available, also dongles for miniDP->DP to not waste DP cable if you have it connected already to the monitor https://www.amazon.com/Cable-Matters-DisplayPort-Adapter-Black/dp/B00HNF0KF0)

If you already have one DP and one HDMI cable, adapters ^ for ~30$ total will allow plugging DP into port of both laptops and HDMI can go directly in. No place for USB peripherals though, you would get at least USB3 hub for free if you plug one monitor in X1C with USB-C -> USB-C cable.

Cheapest options to connect both monitors via 1 cable on X1C (if you cannot make it work with internal hub on monitors in daisy chaining mode), these are only interesting to have 1 connection on X1C (avoid taking two USB-C or one USB-C + HDMI, not super useful since same config won't work with MacBook) + provide USB2 for keyboard/mouse etc.:

USB-C -> dual DP 1.2 with USB2: https://www.amazon.com/gp/product/B0746NKVBN (for X1C only)

USB-C -> dual HDMI 1.4 with USB2 https://www.amazon.com/Cable-Matters-Multiport-Adapter-Ethernet/dp/B0746P6LPP (for X1C only)

I'm not proposing any more fancy hubs USB-C -> single DP1.2 + USB2/3 since your monitors already have one and it would work for X1C only too

for configs to support dual 1440p60Hz monitor via one cable - USB-C DP1.2 docks that have 4 lanes for video + USB2 (not USB3!) will handle dual 1440p60Hz - Cable Matters does variation for dual DP https://www.amazon.com/gp/product/B0746NKVBN and dual HDMI https://www.amazon.com/Cable-Matters-Multiport-Adapter-Ethernet/dp/B0746P6LPP, plenty of other (see 4 lanes for video in https://www.bigmessowires.com/2019/05/19/explaining-4k-60hz-video-through-usb-c-hub/). for dual 1440p on T490 TB3 will just give you better USB/Ethernet speeds (but something like 40AN will cost more)

but in general - USB-C and TB3 (in either TB3 or USB-C mode) ports on T490 support DisplayPort 1.2 (even one 4K60Hz on each port would work); only HDMI on the laptop is a bit more limited.

Does it work with T490s? Or stopped working completely? If it has stopped working completely with two laptops and no issues with cables/connections - I would return asap.

Is this 40AF dock? Appears to be DisplayLink https://www.reddit.com/r/thinkpad/wiki/newdocks (just in case if you didn't see that before).

what monitors do you plan to use btw? If DisplayLink is not good enough - with T490s and T14 AMD it might be hard to pick one fancy dock that works perfectly with both (everything connected via one cable with dual 4K etc.): T490s has Thunderbolt3 (probably slightly limited as most T/Ts) and USB-C with DisplayPort 1.2, but it appears T14 AMD has USB-C with DisplayPort 1.4. If you want to have fancy config with dual 4K 60Hz on both laptops - this will require some care in buying accessories, T490s will likely need 2 cables for dual 4K 60Hz (likely same Tb3 limitation as T480s) + afaik only the newest USB-C dock gen 2 40AS* can handle dual 4K on USB-C DisplayPort 1.4 via one cable https://dancharblog.wordpress.com/2019/10/10/dual-4k-60hz-monitors-via-usb-c-with-displayport-1-4/ for T14 AMD, but it's suboptimal for T490s and may not provide even single 4K60Hz there.

would something more basic fix all needs for you - e.g. USB 2.0 (not 3.0!) + dual DisplayPort 1.2 dock + 60w power? (this would allow up to 4K60Hz + FHD60Hz on both laptops and costs less) amazon.com/gp/product/B0746NKVBN. if you need second high resolution monitor (e.g. second 4K60Hz) - you could add via another USB-C dongle https://www.amazon.com/Cable-Matters-DisplayPort-Adapter-Supporting/dp/B01K51GM46 that should work for both laptops too

tl;dr yes, T480s drives 4k 60Hz + FHD 60 Hz via rear DP ports on 40AN just fine. But you need to make sure to connect it to TB3 port and not USB-C. my problems with 40AN are a bit "exquisite" - it's not a perfect USB-C dock for machines without TB3 + not great for macOS machines when multi-display config used + costs a bit too much (200-300$ depending on PSU supplied with it). consider https://www.amazon.com/gp/product/B0746NKVBN USB-C dock instead if T490 also has limited TB3 as T480.

yes, with T480s you can use 40AN to output either single 4K 60Hz or 4K 60Hz + FHD 60 Hz via rear DP ports. so for TB3 on non macOS 40AN works pretty well across all Thinkpad TB3 machines, just some of those machines are limited. It costs a bit much - 200-300$ which is not very justified for T480/T480s owners that cannot get dual 4K 60Hz from it but could get the same 4k+fhd 60Hz from USB-C docks with USB 2.0 that cost 50$-60$. One unexpected benefit - 40AN seems to provide a lot of power to USB, I had issues with many other docks not able to drive my USB lamp on top of the main monitor. But otherwise if T490 has the same limit as my T - you are better off bying USB-C dock that can do 4k+fhd 60hz.

For L380 and other non-TB3 machines you would needs USB-C dock that allocates all bandwidth to DP to make the same configuration 4k+fhd 60hz work (those docks have only USB 2.0 ports, 100mbit ethernet etc. because the only bandwidth left from USB-C comes from legacy USB 2.0 lanes and the rest is fully assigned to carry DP 1.2 - see https://www.bigmessowires.com/2019/05/19/explaining-4k-60hz-video-through-usb-c-hub/ ). With something like https://www.amazon.com/gp/product/B0746NKVBN you will get 2 DP capable to drive 4k+fhd. While 40AN is kind enough to degrade into USB-C dock with machines like L380, its USB-C dock behavior is different - it would allocate part of the bandwidth to USB 3.0 ports and the other half left is not enough to drive even single 4K 60Hz. Therefore 40AN is not "perfect" USB-C dock, and if you only have T480s and some USB-C machines like L380 - might as well just go with USB-C dock that has 2 DPs and USB 2.0 instead.

My 40AN dock is pretty new, will see how it goes... But all in all, bang for buck is not high enough unless you own Thinkpad that needs TB3 + proprietary power connector for 135w charge. Like it's reeeealy close to the cost of Razer Core X + some low grade GPU for complex multi-display setups like dual 4K 60Hz or more, and it mostly doesn't win anything over USB-C docks with simpler setups

tl;dr triple FHD on one USB-C cable (+ charge + USB 2.0) is doable on Intel iGPU with internal display disabled via Command Center

In theory you can get triple FHD 60Hz from one DisplayPort 1.2, no need for TB3 even. You have to disable internal display via Intel Command Center because iGPU can only handle 3 displays, no matter how they are connected. In practice I could make it work on my X1Y gen5 (triple external display in FHD 60Hz + internal disabled) with 1) and 2) setups:

1) HDMI to 1 FHD + USB-C dock with 2 DP and USB 2.0 that has MST hub like https://www.amazon.com/gp/product/B0746NKVBN . It's 2 cables (one USB-C + HDMI), but you get 60w charge and 2 USB 2.0. Have to connect/disconnect both cables about at the same time so it can correctly switch profiles - setup of 3 displays is extremely fiddly, but once done seems to stick. Your milage may vary... See https://ibb.co/N6XgRgq

2) USB-C hub with 1 DP and USB 2.0 (many options but here's one specific https://www.amazon.com/Cable-Matters-Multiport-Adapter-Ethernet/dp/B076TRGGM6) + DP MST hub like https://www.amazon.com/gp/product/B0839LTNFK (this one is DP 1.4, but backwards compatible with DP 1.2, all triple DP MST hubs seem to cost ~100$ anyway :( ). With this setup you get PD 60w + USB 2.0 + triple FHD 60Hz from one USB-C cable.

3) https://www.amazon.com/Cable-Matters-Display-DisplayPort-Charging/dp/B07XYCHGQM - I don't have this dock (at least yet...), but if it works in DP 1.2 backward compatible mode it might match 2) closely connecting all displays via one DP and costs 60$, 1 cable to laptop is nice. Ideally need to check if it's DisplayLink or not (description claims MST hub - I'm hopeful this is going to be useful for us...)

You may end up needing to reconfigure displays occasionally if it forgets FHD 60Hz on external monitor and/or disabled internal. 1) is more practical as it costs ~50$, vs 2) in ~150$ range - too close to eGPU setups IMO. If 3) works out - would be very nice too. I skipped TB3 docks since they are usually more expensive - 200$+ (at least I don't have a cheap one to recommend at the moment), but probably 40AN can do it via adding third display via dongle to front panel USB-C->DP on X1C/X1Y (not so sure on T480/T480s). Daisy chaining on monitor is interesting, but they are kind of not well documented and depend on the model - if it has DP MST hub inside (e.g. daisy chaining monitor not compatible with macOS - that's very likely to work)

When I realized this setup works on single DP via USB-C - tried on T480s and L380, but could only make triple FHD with 50Hz on 1 display and 60Hz on 2 others (not every display even supports 50Hz, some will only do 30Hz). Otherwise one display either enters 1024x768 or some of the displays show "snow" and connect/disconnect all the time. I couldn't figure out why, wondering if it's related to driver version differences or the fact that these machines have 8250u (8th gen) vs Yoga running 10510u (10th gen) CPUs.

eGPUs are nicer for people who combine Windows and macOS machines if you care about that (put AMD card in it - and works with any TB3 laptop on Windows or macOS), MST hub is not supported in macOS at all (no matter what resolution of displays you have - they at best mirror via DP on both 1) and 2) on macOS).

I tried with 4K@60Hz monitor + 1080p@240Hz monitor, but second monitor doesn't seem to work in 75Hz at all: it can do only 60Hz and 100Hz, so 4K@60Hz + 1080p@60Hz works, but switching to 100Hz didn't. Tests were done on T480s with iGPU + no LCD panel installed (internal screen disabled) + https://www.amazon.com/Cable-Matters-Multiport-DisplayPort-Ethernet/dp/B0746NKVBN USB-C hub + Viewsonic vx2475smhl-4k + BenQ ZOWIE XL2540. DP cables tested to support max refresh rate on both monitors and shouldn't be an issue.

Looking at https://blog.startech.com/post/tips-tricks-tools-to-know-for-multi-stream-transport-and-displayport/ appears that it might work with USB-C dock that has 2 DP with MST like https://www.amazon.com/Cable-Matters-Multiport-DisplayPort-Ethernet/dp/B0746NKVBN or getting DP from USB-C and adding hub https://www.startech.com/AV/display-and-video-adapters/Displayport-Adapters/Triple-Head-DisplayPort-Multi-Monitor-MST-Hub~MSTDP123DP (afaik exists in 2, 3 and 4 port version). 4k@60Hz + FHD@60Hz but rough estmate of bandwidth shows 4k@60Hz + FHD@75Hz might work too.

If you can wait 1-2 weeks - I can test setup like that on T480s (waiting on screen replacement to assemble it back).

PS: T480s cannot handle more than 1 DP 1.2 over TB3 - so TB3 doesn't help in any case.

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this is the best USB-C based product on the market because besides 4K @60Hz it also allows charging, network and USB 2.0 devices.

https://www.amazon.com/dp/B0746NKVBN/ref=emc_b_5_mob_t

If you need dual 4K @60Hz you can either hook up two of these or buy a far more expensive TB3 dock

I've elaborated all the basics here:

https://www.reddit.com/r/MatebookXPro/comments/auafyh/overview_connect_your_matebook_to_an_external/

In the future, please avoid the use of URL shorteners.

Also, please avoid the use of Amazon Referral links.

The URL you should have linked to is this:

https://www.amazon.com/gp/product/B0746NKVBN/

Cable Matters Dual Monitor USB C Hub (USB C Dock) with 2X 4K DP, 2X USB 2.0, Ethernet, and 60W Charging for Windows - Thunderbolt 3 Port Compatible - Support One External Display with MacBook Pro

I use this guy cause I’m strapped to two DP monitors. Gets the job done but doesn’t support two monitors on Mac only PC. I switch between the two.