The USB 3.0 to SATA cable is mainly used to connect the SATA hard disk holder.This cable connects 7+6pin Slimline SATA optical drive to computer via USB port for easy test and data transfer. Support Equipment: Laptop SATA optical drive, SATA CD/DVE-Rom drive bracket. Support USB2.0/3.0, XP, Win7, Win8, MAC, desktop, notebook.Note: this optical drive cable can only be used in the laptop with Sata 6pin +7pin 13pins port, but it can't connect to the hard drive, or desktop optical drive.