Description: This Serial ATA 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 caddy to your laptop to give you another hard drive. Simply remove your CD/DVD-ROM drive and put the Caddy (with the added hard drive) in its place.This is a good working adapter and is guaranteed.9.0mm-thick caddy.HDD Interface: This device takes a SATA (2.5 sata1 sata2 sata3 or SSD ) drive. Features: 100% brand new and high quality.1. Plug and Play2. Fast and reliable connection in your laptop, just as the primary HDD.3. Fully integrated into your laptop, no cables/PSU/software driver needed.4. Dual Boot, support Installation of the 2nd operating system on the 2nd HDD and boot selection. Specifications: Item Type: HDD CaddyCase Material: PlasticColor: Black/Blue (Optional)Thickness: 9.0mmQuantity: 1 Set (other accessories demo in the picture is not included) Note: 1.Transition: 1cm=10mm=0.39inch2.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package includes: 1 X Hard Drive Caddy (No retail package)1 X Screwdriver4 X Screws