Description Main chip: RTL8723DU Bluetooth instructions: Bluetooth version: V4.2 Bus type: USB1.1/USB2.0 Transmission distance: 10 meters RF power: 10 dBm (max) Antenna gain: 2 dBi Transmission rate: / Power consumption: 100 mA - 200 mA (BT+WIFI) The current varies depending on the operating mode Supported operating systems: WIN 7/WIN8/10/11 operating system WIFI description: Supported standards and protocols: IEEE 802.11n, IEEE 802.11g, IEEE 802.11b, CSMA/CA with ACK Transmission rate: 150 Mbps Frequency range: 2.4~2.4835 GHz Working channel: 1-14 Modulation: 802.11g: OFDM 802.11b: CCK (11, 5.5 Mbps), QPSK (2 Mbps), BPSK (1 Mbps) Transmission rate: 802.11b: 11, 5.5, 2, 1 Mbps 802.11g: 54, 48, 36, 24, 18, 12, 9, 6 Mbps 802011n: up to 150 Mbps Reception sensitivity: 130M: -65 dBm@10% PER; 108M: -65 dBm@10% PER; 54M: -65 dBm@10% PER; 11M: -87 dBm@8% PER; Transmission distance: Up to 100 meters indoors, up to 200 meters outdoors (depending on the environment) RF power: 16 dBm (max) Antenna gain: 2 dBi Spread Spectrum Technology: DSSS (Direct Sequence Spread Spectrum) Power consumption: 100 mA - 200 mA (BT+WIFI) The current varies depending on the operating mode Supported operating systems: Windows 2000/XP/Vista/WIN 7/WIN 8/10/ OS operating system Usage environment: Operating temperature: -20 Celsius to 45 Celsius Storage temperature: -40 Celsius to 70 Celsius Color: black Material: Metal+ABS Package Contents: 1 x USB WiFi Bluetooth adapter Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture to be slightly different from the real thing. The measurement allowed error is +/- 1-3 cm.