The 320 GB Backup USB 2.0/FireWire Combo External Hard Drive from Western Digital offers an easy, high-capacity solution for conveniently storing your photos, music and videos. Equipped with a FireWire and USB 2.0 interface, this external hard drive delivers data transfer rates of up to 480 Mbps - ideal for backing up large files quickly. Preformatted for simple setup, this drive is Plug-and-play compatible so you can plug/unplug it without shutting down your system. It also offers a rotational speed of up to 7200 RPM and an average seek time of just 8.9 ms for fast disk access. The Dual-option backup allows to choose how and when to back up your data automatically or on demand. Incorporated Safe feature ensures all data is safely transferred before shutting down the drive. The bundled Dantz Express Backup software allows you to backup virtually all your data instantly. Additionally, it features a built-in USB 2.0 hub for easy connection of USB peripherals such as keychain drive, printer, keyboard, or mouse.