SaiTech IT 2nd Hard Drive Caddy 9.5MM for Unibody -The device takes 2.5"/9.5mm Serial ATA laptop HDD SSD Please Note: This Model support all Unibody Models with Sata Connection on DVD ROM. Please Note: This item only fits unibody models (Late 2008 / Early 2009 / Mid 2009 / Late 2009 / Early 2010 / Mid 2010 / Early 2011,mid 2012) , NOT suitable for other non-unibody models. Add Second Hard Drive to your Unibody Models and Expand Storage on it. 9.5MM SATA to SATA connection support all 2.5 Sata Hard Drives and SSDs upto 9.5 mm thickness. Compatibility It is compatible with Laptop that has a 9.5mm-high unibody SuperDrive with SATA interface. Please Note: This item only fits unibody models (Late 2008 / Early 2009 / Mid 2009 / Late 2009 / Early 2010 / Mid 2010 / Early 2011) , NOT suitable for other non-unibody models. Compatible with : Unibody: MB466LL/A, MB467LL/A, MB881LL/A 1 Year Warranty Replace internal SuperDrive of Unibody (13,15,17) with 2nd HDD or SDD Compatible with: 2.5&#034; / 9.5mm SATA HDD or SSD - ( Hard drive NOT included ) This SATA optical bay hard drive caddy allows you to replace your CD/DVD drive with a second SATA hard drive or solid state drive, instantly adding more storage space to your laptop It supports hot swapping, Plug and play. Fast &amp; Reliable connection in laptop. Fully integrated into laptop. Add a second hard drive or SSD (not included) to your Unibodywith OptiBay - Optical Bay Drive Kit