Yes I use it with the Surface 3 pro

Yes, it works; however, HDMI or DVI cables from the adapter to the monitor should be of high quality and on one of the latest versions, otherwise there may be picture failures. With high-resolution monitors, it may be that the best modes do not work, in which case it helps to lower the frequency. Conclusion: Such an adapter is useful in the office environment, but not for gaming or image/video editing, then only direct connections.

Yes, the mini DP is standard and not unique to the PC world

Yes.

Hi Christyson. See product description: "Only one monitor can be operated on the adapter, not several at the same time."

Hi. Although I have the thing in white -. Delock Mini Displayport 1.1 to (DVI, HDMI, VGA, 10cm) but it seems to be technically the same. So yes, it works directly on the Surface 4 Pro and also on the dock...

Yes, I have exactly this configuration of device and adapter