Main chip: RTL8723DU Bluetooth Instructions:Bluetooth version: V42 Bus type: USB11 or USB20 Transmission distance: 10 meters RF : 10dBm (max) Antenna Gain: 2dBi Transmission speed: or S Working current: 100mA - 200mA(BTandWIFI) The current varies with the working mode Support operating system: WIN 7 or WIN8 or 10 or 11 operating system WIFI description: Supported standards and protocols: IEEE 80211n, IEEE 80211g, IEEE 80211b, CSMA or CA with ACK Transmission speed: 150Mbps Frequency range: 24-24835GHz Working channel: 1-14 Modulation: 80211g: OFDM 80211b: CCK(11, 55Mbps), QPSK(2Mbps), BPSK(1Mbps) Transmission rate: 80211b: 11, 55, 2, 1 Mbps 80211g: 54, 48, 36, 24, 18, 12, 9, 6 Mbps 802011n: up to 150Mbps Receive Sensitivity: 130M: -65dBm 10 percent PER 108M: -65dBm 10 percent PER 54M: -65dBm 10 percent PER 11M: -87dBm 8 percent PER Transmission distance: Up to 100 meters indoors, up to 200 meters outdoors (depending on the environment) RF : 16dBm (max) Antenna Gain: 2dBi Spread Spectrum Technology: DSSS (Direct Sequence Spread Spectrum) Working current: 100mA - 200mA(BTandWIFI) The current varies with the working mode Support operating system: Windows 2000 or XP or Vista or WIN 7 or WIN 8 or 10 or OS operating system Use environment: Operating temperature: -20Celsius to 45Celsius Storage temperature: -40Celsius to 70Celsius Colour:black Material:MetalandABS 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 a little different from the real thing. The measurement allowed error is 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.