SSD Upgrade for Lenovo ThinkPad T420 256GB/512GB/1TB/2TB | eBay
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 :
1TB SSD upgrade for T420. : r/thinkpad
Lenovo ThinkPad T420s Hard Disk Drive Replacement - iFixit Repair Guide
ThinkPad T420 Hard Drive Replacement - iFixit Repair Guide
ThinkPad T420 Hard Drive Replacement - iFixit Repair Guide
I bought a 2,5” SSD for my thinkpad e595 and when I've opened it, theres something in the ssd slot. I bought it just with M.2 memory, so I don't know what