iConnect World SATA 2nd HDD HD Hard Drive Caddy Case for 12.7mm Universal Laptop CD / DVD-ROM Optical Bay The 2nd Hard Disk Drive Caddy / Adapter to bring you new maximum data storage flexibility, with the compact portable design. Which can work with 2.5" 9.5mm / 12.7mm Serial ATA Hard drive HDD and SSD (Solid State Drive) as well. With the second HDD in your Laptop, You can speed to backup important applications and critical data ( Simply remove your CD-ROM drive and put the Caddy (with the added hard drive) in its place. Easy operation and convenient to use. Compatible Model: Macbook: MB466LL/A, MB467LL/A, MB881LL/A, MB240LL/A, MB207LL/A, MB516LL/A, Support Plug & Play; Fast & Reliable connection just as the primary HDD.Fully integrated into Laptop, no cables / PSU / software driver needed. Dual boot, Support installation of 2nd Operating System on the 2nd HDD and boot selection Installation: Unpack the New drive, lift the adapter retaining latch, the screw to the hard disk; Insert the drive into the Adapter at an angle; Slide the drive into the connector until it locks into place; Lower the adapter retaining latch until it snaps closed