Generic 12.7mm SATA to IDE/PATA Hard Drive Tray for DELL The height of this adapter is 12.7mm. 100% Brand New & Never Used Item. Plug & Play. 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. The 2nd Hard Disk Drive Caddy to bring you new maximum data storage flexibility. With the second HDD in your Laptop, You can speed to backup important applications and critical data (Simply remove your CD-ROM drive and put the Caddy (with the added hard drive) in its place.