GSKY High Power 500mW 27dBm 802.11b/g USB Wireless WiFi LAN Adapter With High Gain 7dBi Panel Antenna Power up to 500mW Back Track BT3 supported High power in compact size Operating distance of up to 1000 meters (depending on surrounding environment) Support USB 2.0/1.1 interface. Win 98SE/ME/2000/XP/x64/Vista/7