USB interface: device port, 480Mbps -5Gb/s USB 2.0-3.0 high speed Advantage: USB 2.0 to USB 2.0 port rated at 480Mbps USB 3.0 to USB 3.0 port rated at 5Gb/s USB 2.0 /3.0to SATA/USB 2.0 port rated at 60Mbps/500MBS Capacity: 4,000GB SATA (maximum) Support automatic sleep function Shell material: aluminum Plug-and-play function LED indicator shows power and disk activity AC input: 100 to 240V, 50 to 60Hz Power supply: 12V/5V, 2A/30W external power System requirements: Microsoft Windows 98, SE, Me, 2000, XP, and Vista and above Working humidity: 10 to 50% Dimensions: 185 x 115 x 30mm Weight: 198g