Get used to this: with a MODULAR PSU, you NEVER plug any device directly into a socket on the PSU box. ALL connections are made to a CABLE supplied with the PSU and plugged into a proprietary socket on the PSU box. Most such cables come with two or more types of connectors on one cable, and often two or more instances of EACH connector type. For example, you may have one cable with the PSU that plugs into a "Peripheral and SATA" socket of the box and provides four SATA power outputs to plug in your peripheral devices.