COMFAST CF-WU810N 2.4GHz 802.11b/g/n 150Mbps USB 2.0 Wireless Wi-Fi Network Adapter &ndash; White Standard IEEE: 802.11g,IEEE 802.11b,CSMA/CA with Ack.used with IEEE 802.11n(draft 2.0) Wireless Technology Operation System Windows 2000/XP/Vista/WIN 7/LINUX etc. Frequency 2.4~2.4835GHz It Built in Smart Antenna, Can Sharply Strengthen the Wireless Signals Receiving Ability, Wireless Stability and Signals Covering Range. Ensures maximum security of your data and networking activities using advanced data-encryption schemes.