ChipREALTEK RTL8821CU Bluetooth Instructions: Bluetooth VersionV4.2 Bus TypeUSB1.1/USB2.0 Working Frequency2.4000GHz~2.4835GHz Channel0-78 channel Modulation Coefficient8DPSK, TT/4 DQPSK GFSK Maximum Input Level8DPSK (3Mbps); TT/4-DQPSK (2Mbps); GFSK (1Mbps) Transmission DistanceApprox. 10 m / 393.7 in RF Power10dBm (maximum) Antenna GainBuilt-in antenna, antenna gain peak 0~2dBi Transfer Rate1Mbps basic rate; 2.3Mbps post enhancement rate Working Current100mA – 200mA (BT+WIFI) current varies with operating mode Support Operating SystemFor WIN 7/WIN8/10 operating system WIFI Description: Supported Standards and ProtocolsIEEE 802.11ac/n/g/b, CSMA/CA with ACK Frequency Range2.412~2484GHz/5.15~5.825GHz (different to national standards) Working Channel2.4G: 1-14; 5G: 36~165 (different depending on national standards) Transmit Power802.11b (CCK) 11Mbps: 18+/-1dBm 802.11g (OFDM) 54Mbps: 15+/-1dBm 802.11n (OFDM) 150Mbps: 15+/-1dBm 802.11ac (AC80) MCS9: 12 +/- 2 dBm Transmission rate802.11b: 11, 5.5, 2, 1 Mbps 802.11g: 54,48, 36, 24, 18, 12, 9, 6 Mbps 802011n: up to 150Mbps 802011AC: up to 433Mbps Receiving sensitivityAC80-MCS9: -55@10% PER 130M: -65dBm@10% PER 108M: -65dBm@10% PER 54M: -65dBm@10% PER 11M: -87dBm@8% PER 1、As a combination of USB network card Bluetooth 4.2 audio receiver, its efficiency is improved in a large degree. 2、It is free drive for WINDOWS system in WIFI mode, and bluetooth driver is installed according to the driver CD. 3、Receiving WiFi, such USB network card can be plugged into the laptop for enjoyment of wireless internet access. 4、Depending on its powerful system compatibility, it can supports for WIN 7/ WIN8 / WIN 10. 5、Adopting for wireless net, its data transmission rate is high, and it is made of high quality material, being strong and durable. 1 x Network Card 1 x CD 1 x Instruction Manual