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I have two modern monitors:

  • Huawei MateView 28" (3849 x 2560)
  • Dell P2423DE 23.8" (2560 x 1440)

They are arranged as depicted below:

enter image description here

Currently I'm using a Lenovo Thinkpad T490 and a Dell XPS 9550 (from 2016). Both have USB-C output.

I was hoping to be able to use MST connecting only a USB-C from computer to the Dell monitor and then the DP out from the Dell monitor to the Huawei monitor. However, that makes the image quality of the Huawei very poor. The only way I have been able to connect both monitors to one computer is to use both USB-C outputs of the Lenovo computer, one to each monitor. That wouldn't work for the Dell computer since I only have one USB-C output there.

The ideal setup would be to only need to connect a single USB-C output from my computer (handling both energy, monitors and the USB-stuff connected to the monitors). How would I do this?

Edit 1: I was hoping a dock would not be needed since I chose the monitors with many USB ports so that they themselves could work as docks, reducing the number of devices. Also one reason for going with P2423DE was the 90W charging using USB. But maybe the built-in docks of these monitors are not powerful enough? If I need a dock: Do you know which performance (or specific device) I should look for? Would the Dell computer USB-C throughput be suffi

Edit 2: I have also tried connecting the computer USB-C to a monitor USB-C and then the monitor USB "output" to the other monitor USB-C input, but that never gets any display from the second monitor (but the keyboards etc connected to the second monitor is accessible by the computer). I guess the throughput isn't enough for display?

Edit 3: One of the USB-C ports of the Lenovo is TB3 and so is the only USB-C port of the Dell. The Dell computer is old and I have seen people experience challenges with the behavior of the TB3 port. However, based on the input from Tom Yan I tested whether the following setup would give better result. Lenovo TB3 to Dell monitor USB-C and Dell monitor DP out to Huawei DP. This didn't give any better result than using the Lenovo USB-C (gen 1) output.

nize
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2 Answers2

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The ideal setup would be to only need to connect a single USB-C output from my computer (handling both energy, monitors and the USB-stuff connected to the monitors). How would I do this?

A dock.

We use Lenovo USB-C Docks, which everything plugs into and then a singular USB-C connects to the computer. This chargers, provides ethernet and all USB-C and USB connected functions.

As for the poor quality on Huawei - have you tried connecting the computer to the Huawei first, and then DP to the Dell? Does that result in the Dell having poor image quality?

bce
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You want to look for a USB-C dock.

I currently have one connected to my laptop. One USB cable from the dock to my laptop with 2 screens attached to it. The power is also provided through the USB-C dock via the single cable

Randomhero
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