G-DRIVE mobile features USB 3.0 and FireWire interfaces, exceptional throughout performance, and up to 1TB capacity – making it the perfect storage option for portable use. It's Time Machine® ready so backing up all of those important documents, music, digital video and photos, is easy! Also the G-DRIVE mobile is bus-powered, and that means when you're on your way out, you don't need to add an external AC power supply to your laptop case. G-DRIVE mobile comes preformatted HFS+ with Journaling and is Time Machine® compatible right out of the box! A simple initialization is all it takes to prepare G-DRIVE mobile for use with Windows® systems! Features include: up to 1TB of storage • compatible with Mac or Windows • stylish aluminum design • 3-year limited warranty.