This Hard Drive Adapter lets you add a second hard drive to the laptop systems. With a second hard drive, you can quickly store and back up critical data. Add this to your laptop to give you another hard drive. Simply remove your CD/DVD-ROM drive and put the (with the added hard drive) in its place.This is a good working adapter and is guaranteed. and high quality 9.5mm thick. Support: SATA Support hard disk:2.5 HDD, SATA,SATAII,SDD Size: 129mm*128mm*9.5mm How to use:Unpack the New drive, lift the adapter retaining latch, the screw to the hard disk Insert into the Adapter at an angle Slide into the connector until it locks into place Lower the adapter retaining latch until it snaps closed Compatible Models: Laptop with a 9.5mm thick DVD-ROM Material: Metal Package include: 1 x 2nd Hard Drive Case TrayNote: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.