Surface Pro 4 / 2 x 4K monitors / CSV-5400

1 reply

Hi all,
I try to get an Surface Pro 4 working with the Surface Dock and two 4K monitors. I try to use a CSV-5400 that is connected to the Surface Dock. The first display (Acer CB280HK - UM.PB0EE.001) is working fine. The second one, a Samsung (U28E590D - LU28E590DS) flickers and turns off. I know that it isn´t easy to get two 4k monitors working with the Surface dock, but I bought the CSV-5400 because I thought that it would make it easy to connect the two 4K displays. Any ideas, where is my mistake?

Many thanks,
Carsten

Hi Carsten,
You cannot get two 4K displays from a single DP port. The MST Hub split the bandwidth on 4 ports and the maximum on each does not reach 5 Gbps or 1080p. A DP port has a maximum bandwidth of 21.6 Gbps, a 4K signal reaches almost this bandwidth. 
To get two 4K displays running you require to have two individual DP ports from a graphics card or a supported device.

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