As others have said this does not appear to be a dual link cable. The pins are there on the plug ends but not wired. This cable DOES NOT support 2560 X 1600 resolution on my Dell U2711 (27") monitor. Wire is thin like non-dual link cable. I only got up to 1920x1080 resolution. Bought another cable and it worked fine at 2560x1600. Do not buy this if you need a dual link cable!