oh man dont even get me started on this as someone who watches non-pirated media on my computer. do you know hard it is to find a displayport 1.2a 4k compliant cable!? ask
@PatrThom about the many nights i consulted with him trying to figure it out. I used no less than 6 computer/software professionals to find a cable that could do what was needed.
the short answer is if you are going to watch legal streams/copies of media all your parts should have the HDCP compliant sticker.