This is my first full system build. I have an Asus P8P67 Mobo with a 24 pin power connector. I purchased the X 750 as my PSU. The X750 motherboard cable has a 24 pin end for the mobo connection and the other end (psu end) is split into a 16 pin and a 10 pin. Which do I plug into the X750, the 16, the 10, or both?