2ND Hard Disk Drive HDD caddy/adapter for any uses 12.7mm height DVD drive with SATA connector to the motherboard. It work with SATA hard drive, and SSD (Solid State Drive) as well. Fast & Reliable connection, just as the primary HDD. Fully integrated into laptop, no cables/PSU/software driver needed. Dual boot, Support installation of 2nd operating system on the 2nd HDD and boot selection.

100% Brand New 12.7mm-thick caddy.
This 2nd Hard Disk Drive Adapter that gives you maximum storage
Adds a second hard disk drive to any modular bay
Plug and Play
HDD Interface: This device takes a SATA (2.5" sata HDD or SSD)
Laptop/ Mother Board Interface: SATA
Tab Screw to keep the caddy aligned

Lenovo Thinkpad W520 T520

1 x 2nd HDD Hard Drive Caddy