Western Digital My Book Premium ES Edition Hard Drive - 500GB - 7200rpm USB 2.0 & eSATA Dual Interface External Hard Drive $178.95

Connect today and be ready for the future with this dual-interface external hard drive from WD. With both the popular USB 2.0 interface and the ultra-fast eSATA 3 Gb/s interfaces on board, the My Book Premium ES Edition external hard drive offers near-universal connectivity and unbeatable performance in one high-value external drive. Works with both Windows and Macintosh computers and includes powerful EMC Retrospect Express backup software.

Buy.com is carrying this 500GB Combo (USB 2.0/FireWire) External Hard Drive for $178.95