I'm trying to connect a Rosewill Capstone PSU to an EVGA Geforce GTX 760 GPU. I hooked up the 20+4 connector to the MOBO and now all that's left are 2x 4 pin connectors with the letters CP and U1 on them. The GPU has an 8 slot connection and a 6 slot connection. The "U1" 4 pin connector can fit in the 8 and 6 but the "CP" half won't fit in either one. Please help.