Review on StarTech.com 4-in-1 Dual Link DVI and USB Cable with Audio & Microphone - 6ft (2m) (DVID4N1USB6) - Black by Jacob Ashman

I bought these cables to connect one of my computers to KVM. When I first turned it on I had flickering pixels and my display went completely black every 2-10 seconds. At first I thought my KVM isn't good or it's getting too hot, but I also knew that not all DVI cables are created equal. I bought an expensive cable (about $30) and the problem completely went away from the display that was having problems. I thought maybe it stopped because the machine was getting cold and the KVM was getting colder too. I wanted to make sure it was the cable so I tried it on another computer and voila, same problem, really very bad signal transmission through this cable. It shocked me because the cable is important. I also replaced it with a single link DVI-D cable and the signal transfer was much better with what appears to be a poor quality cable. I will say I bought two of these and the other one seems to be working fine. I'm just shocked that there was such a difference between too. One is fine, the other is completely unusable. If you want to save yourself the headache of setting up a KVM, buy some 6 foot bundled DVI-D dual link cables and buy everything else separately. The cables are really good and the 6 foot cables are only $8. 10 feet cost $30. 6ft Cable Link X3V-DVI6 XHD Series DVI-D Dual Link 24 AWG Cable (6ft)