G-Drive mobile with Thunderbolt, stylish portable data storage for laptop users with ultra-fast Thunderbolt and USB 3.0 interfaces. G-Technology combines 1TB capacity and a 7200 rpm hard drive with Time Machine compatibility for fast backups of documents, music, digital videos and photos. In addition, the G-Drive is mobile with Thunderbolt bus operation, which means you no longer have to carry an external power supply in your laptop bag when you are on the move.