Trendnet Compact Bluetooth® USB Adapter. Connectivity technology: Wireless, Host interface: USB, Interface: USB 2.0 . Data transfer rate (max): 3 Mbit/s. Bluetooth version: 2.0+EDR, Modulation: GFSK, DQPSK, 8DPSK, Frequency band: 2.4 - 2.4835 GHz. TX power consumption: 136 mA, RX power consumption: 45 mA. Weight: 5 g