Want to add another hdd hard drive or ssd? Use this Hp Probook 6440b hdd caddy to make your laptop have the second hard drive. Simply remove your CD-ROM/DVDRW drive and put the laptop caddy (with the added hard drive) in it's place, then there are two hard drives in laptop.
If you are not sure this will work for your notebook, please email the dvd model number, which you could see in the control panel-->system-->hardward-->device manger-->dvd rom, you should be able to see the model number listed. We will help you know which one to use and buy.