Cable-YPCIE628 converts 6-pin PCI-Express to dual 8/6 2 pin PCI Express 2.0. It supports 6-pin or 8-pin graphics cards and is great for NVIDIA SLI cards (needs quad 6-pin PCI Express 2.0) or ATI CrossFire cards. Requires dual 8-pin PCI Express 2.0. Connect one 6-pin PCI-Express from Power Supply, enjoy two 6/8-pin PCI Express 2.0 output to your latest graphics cards. Don’t spend too much on new power supplies- this cable can make it fly.