ITEM NAME:7+15Pin SATA interface to ESATA port large 4pin power interface conversion cabME Specification: 100% brand new and high quality. ESATA to SATA Hard Drive. Large 4 pin power interface is for hard disk power supply. Length:Approx. 50cm Feature: This cable application is more convenient for your application and low cost of using high storage equipment. This line of large 4Pin power interface is to power the hard drive, you must connect to the hard disk to work. Package List:1 x SATA Cable.This line of large 4Pin power interface is to power the hard drive, you must connect to the hard disk to work. ESATA to SATA Hard Drive.