Here is a video showing you how to open the external 2.5" drive (Hitachi 1 TB Touro Mobil). The background showed a 2 TB 3.5" internal HD, not the real 1 TB Touro Mobil case. You can see two noutches on the side (1/3 and 2/3 mark) to insert a flat screw dirver head when you face HITACHI logo on the cover. In the video I did through the other end (opposite to the USB 3.0 connector).