Western Digital WDG1U3200 320GB 7200 RPM USB2.0 External Hard Drive - My Book Essential Edition (Mfr# WDG1U3200N) $108.11

The USB 2.0 interface gives up to 480 Mbps transfer rates. 8.9 ms average seek time Automatic power-up, Safe Shutdown and LED activity lights make this drive easy to use Stackable case looks like a book and sits horizontally or vertically Compatible with PC and Mac Average Latency - 4.2 ms System Requirements - Windows 98 SE, ME, 2000, XP, Mac OS 9.2.2, X 10.2.8 or later, available USB port!

Buy.com is carrying this 320GB External Hard Drive for $128.11

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