ADSRO Hard Drive Caddy Cover Screw for IBM Thinkpad Lenovo T400 R400 Black Type: Hard Drive Caddy Cover Screws Can expand your system and storage capacity with an additional hard drive Modular construction, you can just remove the CD driver and put this in the slot Fast & Reliable connection in laptop, just as the primary HDD Compatible with: IBM Thinkpad Lenovo T400 R400