Imation DEFENDER F100/MXI STEALTH KEY M500 . Capacity: 16 GB, Interface type: USB 2.0, Form factor: cap. Width: 76 mm, Depth: 21.5 mm, Height: 12.5 mm. Security algorithms supported: 256-bit AES. Mac operating systems supported: Mac OS X 10.5 Leopard, Mac OS X 10.6 Snow Leopard, Mac OS X 10.7 Lion