G-DRIVE mobile hard drives are the perfect compliment to your new Apple MacBook Pro. Weighing in at less than 9 oz., G-DRIVE mobile is the ultra-portable and stylish way to travel with up to 500GB of storage space for your important documents, MP3s, digital video and digital photo files. G-DRIVE mobile is bus powered, eliminating the need to carry an external AC power supply. Portability was never so easy!. G-DRIVE mobile is formatted at the factory HFS+ with Journaling and is Time Machine ready right out of the box! A simple initialization is all it takes to prepare G-DRIVE mobile for use with Windows systems!