Perfect for on-the-go laptop users G-DRIVE mobile USB is stylish, thin, aluminum portable storage that combines USB 3.0 high-performance with up to 4TB of storage. Easy to set up, and compatible with Time Machine , you ll find it perfect for storing your most important documents, digital video, photo and music files. The G-DRIVE mobile USB is bus powered so when you re out and about you don t need to add an external AC power supply to your laptop case. Capacity 1 TB Interface model : 0G02875 tag : External Hard Drives