Lenovo ThinkPad T420s Hard Disk Drive Replacement - iFixit Repair Guide
Lenovo Thinkpad T420 320GB 320 GB HDD Hard Disk Drive 2.5 SATA NEW | eBay
500GB 2.5" 7200 RPM SATA Hard Drive with Caddy, Windows 10 Pro 64-Bit and Drivers Preinstalled for Lenovo ThinkPad T420 T520 Laptops : Electronics - Amazon.com
Lenovo Thinkpad T410 T420 T520 1TB Hard Drive Upgrade
New Laptop Hard Drive Cover HDD Lid With Screws for lenovo Thinkpad T420 T420i - AliExpress
Used Lenovo Thinkpad in Black T420 HD 14" Intel Core i5 2520M (2.5GHz-3.2GHz) 4GB Memory 320GB Hard Drive Webcam Bluetooth DVD-RW Windows 10 Professional Laptop - Walmart.com
Refurbished: Lenovo ThinkPad T420 14.1" Windows 7 Professional 64-Bit Notebook - Newegg.com
2nd HDD SSD Hard Drive Caddy for Lenovo Thinkpad T420 T430 T510 T520 T530 W510 W520 W530, Laptop CD/DVD-ROM Optical Modular Bay - AliExpress