Connector: One 4-pin Male Socket to One 4-pin Jacket Female and One 4-pin Mini Socket Female. Splits one 5¼ power connector into one 5-1/4 and one 3-1/2 power connector. Designed for Floppy Drives, Removable Storage Drives, Hard Drives, CD-ROMs, CD-RWs, Tape Drives, Fans, etc.