MSata SSD in Lenovo T420 with 12gb Ram and two more hard drives - YouTube
Adding an mSATA SSD to a Thinkpad T420
Amazon.co.jp: Nimitz 12.7 mm Thick SATA Optical Drive with Lenovo ThinkPad T420 T430 T510 T520 T530 W510 W520 W530, Optical Drive, and HDD or SSD to replace for Kit : Computers