This premium electrical cable is used to supply power to a computer's internal drive systems. Built for excellent conductivity and performance. Fully tested and certified to meet or exceed applicable industry standards, so it provides worry-free reliability. Connects Devices (From/To): CD-ROMs, Hard Disk Drives, Internal 5.25 Floppy Drives, Tape Backup Systems to PC Power Supply; Connector/Port: One 4-Pin Male Socket, Two 4-Jacket Female Sockets; For Device Type: Computer; Cable Type: Power Splitter Cable.