Elements of the WD Series Brand, Model WDBPCK0010BBK-01 USB 3.0 Performance Interface Capacity 1 TB Physical specifications: Weight: 0.44 lbs; Dimensions: 4.43 x 3.1 x 0.75 ; Form Factor: 2.5 lbs. Qualities has compatibility with both USB 2.0 and USB 3.0. large capacity in a compact container. Boost computer efficiency