2nd HDD Hard Drive Disk Caddy Adapter 12.7mm For IBM Lenovo Thinkpad R400 T420. The ThinkPad SATA II hard drive adapter to bring you new maximum data storage flexibility. The adapter can add ThinkPad series in your hard drive in the second hard drive after adding You can speed to backup important applications and key data ( Simply remove your CD-ROM drive and put the Caddy (with the added hard drive) in it's place ).
eBay