Dimensins: 73.8 mm x 37.2 mm x 10.4 mm (2.91" x 1.46" x 0.41") Weight: 29 g (1.02 oz) Color(s): Black Input Interface(s): USB 3.1 Gen 1 / USB Type-A Output Interface(s): USB Type-A x4 (USB 3.1 Gen 1) Output Power: 5V/0.9A from USB port