It converts a SATA Power 15 pin connector into a 4 pin Molex and 4pin Mini (Floppy) power connector‚ in order to supply power to devices that need 4 pin Molex or 4 pin Mini power connections.
This will take a SATA Power Cable, coming from your power supply, and convert it "back" to the old Molex Standard plug that usually fit into the CD/DVD and Hard Drives. This is also know as the SATA...