Dimensions: 1TB/2TB: 129.5 mm x 80.8 mm x 16.1 mm (5.10" x 3.18" x 0.63") 4TB: 129.5 mm x 80.8 mm x 24.1 mm (5.10" x 3.18" x 0.95") Weight: 1TB/2TB: 185 g (6.53 oz) | 4TB: 294 g (10.37 oz) Capacity: 1TB / 2TB / 4TB Storage Media: 2.5" HDD Connection Interface: USB 3.1 Gen 1 Connector: micro-B Cables(s): micro-B to USB Type-A Color(s): Iron gray / Military green