Verbatim 320GB USB 2.0 Portable Hard Drive for $48.99 shipped after a $30 rebate. Note that the rebate is in the form of a pre-paid Visa card. Here is a screenshot for your reference. This USB portable hard drive does not require a separate power supply like most external hard drives and is also smaller than most of them, making it much more convenient to travel with and carry around. Most places have this portable USB drive for over $80.