Forum Post: Gigabyte GTX 770 2GB connection in old XPS 700/720

In my XPS 700/720, there are four 6-pin Male Graphics Card connectors from the power supply. Two, the first, P3, marked 6A (6 Amp?) uses 3 Blue/Yellow wires from 12 volt circuit "E". And P4,marked 6A (6 Amp?) uses 3 Blue/Yellow wires from 12 volt circuit "E" also.