The SATA power splitter/extension can be used to create additional power ports or extend what you have already. 

The cable has one male port for connecting to an existing power cable and three female connectors for adding devices.

This Adapter Changes one standard SATA power connector into 3 x SATA Power  Connector's

For use with SATA Hard Drives, SATA DVD Drives, Blue RAY  Drives etc.