2.5 inch 2nd HDD Hard Drive Caddy SATA for IBM ThinkPad T400S / T410/ T410S / T420S / W500 / T500,Thickness: 9.5mm

1) Plug & Play, Supports hot swapping 2) Fast & Reliable connection in laptop, just as the primary HDD 3) Fully integrated into laptop, no cables/PSU/software driver needed 4) Dual boot, Support installation of 2nd operating system on the 2nd HDD and boot