I have a P502UI-B1E and an R9 280X. My experience with this adapter has been nothing but a headache and would love to just get it working, but I’m afraid I’m just going to have to get a refund for this thing. The most aggravating part is how much of a good word I had put out for this thing and it doesn’t even do what it’s advertised to do. I got it as far as dxdiag telling me it was running in 60hz, but when I start up a game, I lose picture. I’d like to also note that when I plug the cable into the adapter, the options to change pixel formats goes away and when it’s in the HDMI port, it only displays 4:4:4 and 4:2:2 as options. Sent an email to support but haven’t gotten anything.