G-DRIVE mobile USB portable hard drives are the perfect compliment to your new Apple laptop. It is the ultra-portable and stylish way to travel with up to 1TB of storage space for your important documents, MP3s, digital video and digital photo files. G-DRIVE mobile USB is bus powered, eliminating the need to carry an external AC power supply. Portability was never so easy!Easy to Setup – Time Machine ready!G-DRIVE mobile USB comes preformatted HFS+ and is Time Machine ready right out of the box! A simple initialization is all it takes to prepare G-DRIVE mobile USB for use with Windows® systems!