HDD / SSD Caddy Adapter for Lenovo W540, W541, T540, T440p (original Newmodeus caddy w/ carrying pouch) HDD / SSD Caddy Adapter for Lenovo ThinkPad W540, W541, T540, T440p Add a 2nd drive to your ThinkPad by replacing the optical DVD drive with this drive caddy Compatible with SATA 2.5" hard drives or SSD Note: This is for the Lenovo W541, W540, T540 and T440p only. We have caddies for other Lenovo laptop models. Die-cast Aluminum Metal enclosure to help dissipate heat from drive