Main chip: RTL8723DU Bluetooth version: V4.2 Bus type: USB1.1/USB2.0 Transmission distance: 10 meters RF power: 10dBm (max) Antenna Gain: 2dBi Transmission speed: 150Mbps Working current: 100mA - 200mA (BT+WIFI), current varies with working mode Support: Windows 7/Windows 8/Windows 10/Windows 11 WIFI supported standards and protocols: IEEE 802.11n, IEEE 802.11g, IEEE 802.11b, CSMA/CA Frequency range: 2.4~2.4835GHz Working channel: 1-14 Modulation: 802.11g: OFDM 802.11b: (11, 5.5Mbps), QPSK(2Mbps), BPSK(1Mbps) Transmission rate: 802.11b: 11, 5.5, 2, 1 Mbps 802.11g: 54, 48, 36, 24, 18, 12, 9, 6 Mbps 802.11n: up to 150Mbps Receive Sensitivity: 130M: -65dBm@10% PER 108M: -65dBm@10% PER 54M: -65dBm@10% PER 11M: -87dBm@8% PER Transmission distance: Up to 100 meters indoors, up to 200 meters outdoors (depending on the environment) RF power: 16dBm (max) Spread Spectrum Technology: DSSS (Direct Sequence Spread Spectrum) Support: Windows 2000/XP/Vista/Windows 7/Windows 8/Windows 10 Operating temperature: -20C to 45C Storage temperature: -40C to 70C Color: Black Material: Metal + ABS Package Contents: 1 x USB WiFi Bluetooth adapter Note: Light and different displays may cause the color of the item in the picture to be slightly different from the real thing. Measurement allowed error is +/- 1-3cm.