Purchased 2 to use with my Surface Book and Surface dock so I could connect to my two monitors. I saw a lot of good reviews and thought I could get past the few bad reviews....but not the case. The cables worked great for the first 3 months then one started having issues. It started flickering the monitor, then Blue-Screened the computer 6 times in a row. I was afraid it was the docking unit, but after some trouble shooting, direct connecting each monitor to the Surface Book and switching the cables between monitors, I narrowed it down to one of the cables. Its unfortunate but I'm ordering new ones from a different manufacturer.