T510 T510i T520 T520i W510 W520. 12.7mm 2nd SATA HDD SSD Hard Drive Caddy Tray for Lenovo Thinkpad T510. Hard disk caddy. 1 12.7mm caddy. The carefully designed circuit is flawless. The clip design refers to the T420S, which is fixed with two screws, which is more stable than the original T420 with one screw.
eBay