Professional-class, external hard drive upgrades you to super speed with USB 3.0 technology, moving data up to 10 times faster than USB 2.0 drives. Transfer speed is 100MB per second speed though. The USB 3.0 drive with a 500GB capacity is still USB 2.0 compatible and delivers high-speed, data backup and rock-solid protection on the go for valuable documents, photos, videos and other valuable digital content. ArcSoft TotalMedia Backup makes scheduling, backup and restoring as simple and automated as you want it to be. Apollo Expert D300 External Hard Drive is also compatible with Microsoft Windows XP, Windows Vista, Windows 7, Mac OSX 10.5 and 10.6. Brushed silver, industrial design makes it a stylish addition to your laptop or netbook.