LENOVO THINKPAD T420 T520 256GB Solid State Drive SSD W/ Windows 10 Pro 64-Bit | eBay
Amazon.com: Bfenown 2nd HDD SSD Hard Drive Caddy Tray Replacement for Lenovo Thinkpad T420 T430 T510 T520 T530 W510 W520 W530, Internal Laptop CD DVD ROM Optical Modular Bay to 2.5 Inch
MSata SSD in Lenovo T420 with 12gb Ram and two more hard drives - YouTube