I use this with a UHD monitor and rMacbook Pro. It works fine. I previously used a cable made from a different manufacturer that cost four times as much but had given it away during a switch from Mac to PC that lasted a couple years. When IO switched back to Mac, I needed a new cable and was ready to lay down the cash for the expensive one again. So far, I'm glad I took a chance on Amazon's cable. I saved money and it works just as well so far.