Seagate FreeAgent GoFlex Ultraportable Drive
4.7 inches by 3.5 inches by 0.87 inch
Probably the most practical of the drives discussed here, the Seagate FreeAgent GoFlex is also the largest, with a colossal 1.5TB crammed into a 2.5–inch portable enclosure. The drive is a little thicker than less capacious portable hard drives, but we’ll cut it some slack in view of its vast capacity. Another consideration: This unit is a classic hard drive with spinning platters.