Power your internal sata hard drive from an lp4 molex connector on your power supply this sata data and power combo cable features a combination 22 pin sata female data and power connector as well as an lp4 power connector and female sata data connector allowing you create a conventional serial ata data connection to a computer while powering the drive through an lp4 connection to the computer power supplythis high quality sata powerlp4 adapter cable measures 6in providing the flexibility