Amazon.com: New 2nd HDD SSD Hard Drive Caddy for Lenovo Thinkpad T420 T430 T510 T510I T520 T520I T530 T530I T530U W510 W520 W530 W700 W701 R400 R500 12.7mm high with Matched Faceplate/Bezel :
SSD Upgrade for Lenovo ThinkPad T420 256GB/512GB/1TB/2TB | eBay
Lenovo ThinkPad T420 14.0" Black USED Laptop - Intel Core i5 2540M 2nd Gen 2.6 GHz 8GB SODIMM DDR3 SATA 2.5" 256GB SSD DVD-RW Windows 10 Pro 64-Bit - Walmart.com
Lenovo ThinkPad T420s Hard Disk Drive Replacement - iFixit Repair Guide
Lenovo ThinkPad T420/T420i - iFixit
For Lenovo Thinkpad T420 T430 T510 T530 W700 Optibay Aluminum 2.5" Ssd Case Hdd Enclosure 2nd Hdd Caddy 12.7mm Sata 3.0 - Hdd & Ssd Enclosure - AliExpress
Lenovo ThinkPad T420s Power Jack Replacement - iFixit Repair Guide
1TB SSD upgrade for T420. : r/thinkpad
How to upgrade the SSD in your Lenovo ThinkPad T490 | Windows Central
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
Upgrading a ThinkPad T450s with an M.2 SSD - James Ridgway