microware 2nd HDD Caddy 12.7mm 9.5mm SATA 3.0 2.5'' HD Hard Disk Drive Enclosure SSD Case Box For Laptop CD-ROM DVD-ROM Optical Bay 4.5 inch External HDD Adapter 4.5 inch External HDD Adapter  (For HDD, Black)

This 2nd HDD(Hard Disk Drive) Adapter Enables you to add a Second Notebook Hard Disk Drive to your Modular/Optical Bay to Increase your Storage, Providing Up to 500GB of Additional Internal Hard Drive Space. Compatible with: 2.5"/ 9.5mm SATA HDD or SSD, Hard Drive NOT Included. Fits Unibody Models (Late 2008/ Early 2009/ Mid 2009/ Late 2009/ Early 2010/ Mid 2010), Compatible with Mac Book Pro Early 2011, It doesn't Fit for PowerBook G4, Mac Mini and iMac. Built-in Mounting Kit, Fully Integrated into Laptop, No Cables/PSU/Software Driver Needed. Fast & Reliable Connection in Laptop, Just as the Primary HDD. Function: 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.