Description: 4.0, strong compatibility and fast transmission speed. The maximum transmission rate of WIFI is up to 150Mbps. Avoid channel interference and make the wireless signal more stable. Make devices without function instantly have multi-function applications. It can save you a USB port of your computer and easily enjoy the joy of wireless Internet access. Specification: Material: plastic Color: black Size(approx): 19*15*6mm instruction: version: V4.0 Bus type: USB1.1/USB2.0 Transmission distance: 10 meters RF power: 10dBm (maximum) Antenna : built-in antenna Transmission speed: 3m/s Working current: 100mA-200mA (BT+WIFI), change with working mode Supported operating system: for Win 7/8/10 WIFI instruction: Supported standards and protocols: IEEE 802.11n, IEEE 802.11g, IEEE 802.11b, CSMA/CA with ACK Transmission speed: 150Mbps Frequency range: 2.4~2.4835GHz Working channel: 1-14 Modulation method: 802.11g/n: OFDM 802.11b: CCK(11, 5.5Mbps), QPSK(2Mbps), BPSK(1Mbps) Transmission ra