Lenovo Thinkpad T420 Laptop Replacement Hard Drive Caddy w Screws & Cable | eBay
ThinkPad T420 Hard Drive Replacement - iFixit Repair Guide
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