CN0297X Features High performance RALINK3070L chipset Superior wireless performance Long distance wireless signal receiving Built-in 10dBi directional radar antenna Excellent heat dissipation performance Compact size with a delicate design General Specs Brand & Model COMFAST CF-WU770N Chipset RALINK3070L Wi-Fi IEEE 802.11g，IEEE 802.11b，CSMA/CA with ACK.used with IEEE 802.11n (draft 2.0) wireless technology Interface USB2.0 Frequency 2.4-2.4835GHz Wireless Speed 11n: the highest data rate can reach to 150Mbps 11g: 6/9/12/18/24/36/48/54Mbps (Dynamic) 11b: 1/2/5.5/11Mbps (Dynamic) Working Channel 1-13 channel Data Modulation 11b: CCK，DQPSK，DBPSK 11g: OFDM 11n: OFDM with PSK，BPSK，16-QAM，64-QAM RF Power 20dBm (max.) RF Gain 10dBi internal antenna Encryption 64/128/152 digit WEP encryption， WPA/WPA-PSK，WPA2/WPA2-PSK Encryption LED Indicator Link/ Activity Working Environment Working temperature: 0 to 40 Celsius Storage temperature: -40 to 70 Celsius Working Humidity: 10% to 90%RH (non-condensing) Storage Humidity: 5% to 90%RH (non-condensing) Operating Systems Windows 2000/XP/Vista/WIN 7/LINUX/Mac etc. Operating Range Indoors:  1000-2000 m (Theoretical Value) Outdoors: 2000-3000 m (Theoretical Value)