Yeah, might not be. I purposefully didn’t cover the ports and which displays are compatible, because I honestly don’t know. Even Thunderbolt 3 → DisplayPort can have issues, apparently. There’s a lot of complexity and confusion in getting high DPI displays working.
Hi Marc, I am not so sure if the Dell UltraSharp UP2715K (800EUR) is not 5K compatible with the new Macbook Pros. It needs 2 HDMI connections.