US Modular 40GB External USB Hard Drive - USHDE/40GB-2.5UB $49.95

Need a high capacity portable storage solution that can fit in your pocket but hold more data than your PC at home or work? US Modular's Drive is a 2.5" External Hard Drive and is perfect for anyone needing a high capacity portable storage device. This enclosure turns any 2.5" Hard Drive into a convenient portable storage drive that can be used on any system with a USB port. The aluminum casing protects the drive from overheating and vibration. The Dragon Drive supports USB1.1 and USB2.0 to offer fast transfer speeds of up to 480MBPS.

Buy.com is carrying this 40GB External USB Hard Drive for $49.95