Western Digital WD Elements 400 GB USB 2.0 Desktop External Hard Drive WDE1U4000N (Silver) Form Factor - 3.5"-External Dimensions WxDxH - 124.68 x 36.14 x 203.82 mm Weight - 1.02 kg Physical Dimensions (W x L x H): -- 4.90 (+/- 0.010 inch) x 1.42 (Max) x 8.02 (Max) Inches/ 124.68 x 36.14 (Max) x 203.82 (Max) mm