Seagate FreeAgent Go 880GB 2.5″ USB Portable Drive & FreeAgent Dock for $99.99 shipped. Here is a screenshot for reference. The dock is autoamtically added to the cart. This portable drive is USB powered and does not require an external power supply. It is smaller than most external hard drives, making it more convenient to carry around. Most places have it for about $119 or more without the dock.