G-Technology G-DRIVE Mobile 1TB 5400RPM Portable External Hard Drive USB 2.0, FW400, FW800 Interfaces (Silver) (0G02229) 1TB Capacity USB 2.0, Firewire 400, Firewire 800 Interfaces Compact size, weighs less than 9 oz Bus powered -no AC adapter required Unique and stylish enclosure designed with the MacBook user in mind