Universal 9.5Mm sata to sata 2nd hard drive caddy adapter tray compatible with: dell hp lenovo thinkpad acer gateway asus sony samsung msi laptop this universal serial ata optical bay 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 it's place... This is a good working adapter and is guaranteed. Add a second 2.5'' Hdd or ssd to your laptop via the e-modular (e-module) bay / optical drive bay with this drive caddy. 1. The 2nd hard disk drive caddy / adapter to bring you new maximum data storage flexibility, with the compact portable design. Which works with 2.5" Inch 9.5Mm / 7mm serial sata hard drive hdd and ssd (solid state drive) as well. With the second hdd in your laptop. 2. The build-in lock screws make it easy to mount your second hard drive in the caddy.