Goliton 54M Ralink RTL8187L wifi king high power wireless usb+60dbi antenna Standard:IEEE 802.11g,IEEE 802.11b,CSMA/CA with ACK.used with IEEE 802.11n(draft 2.0); ChipsetRealtek RTL8187; Wireless Speed: 11n: the highest data rate can reach to 54Mbps; 11g:6/9/12/18/24/36/48/54Mbps(Dynamic); 11b:1/2/5.5/11Mbps(Dynamic) Encryption:64/128/152 digit WEP encryption,WPA/WPA-PSK,WPA2/WPA2-PSK Encryption; Operation system: Windows 2000/XP/Vista/WIN 7/LINUX Wince5.0/6.0MAC OS etc.;