TRENDnet Wireless G and Bluetooth USB Adapter Hardware Interface: USB 2.0, 1.1 Compliant, Bluetooth 1.2 Class 2 Dimensions (LxWxH): 100 x 30 x 15 mm (3.9 x 1.2 x 0.6 inches) Temperature: Operating: 0?~ 60?C (32?~ 140?F) ; Storage: -20?~ 70?C (-4?~ 158?F) Weight: 32g (1 oz.)