... with external antennaMain Features:l 802.11b: 1, 2, 5.5, 11Mbps; 802.11g: 6, 9 ... interfaceUSB2.0/1.1, type A ( 4 pin header)LEDSLink/ ActivityRFAntennaexternal 5dBi antenna.Frequency2412~2483.5 MHz ... MSC7,SoftwareOperation SystemWindows CE/2000/XP/Vista/7; Linux 2.6.X; Mac OS XSecurityWEP 64/128bit , ... 802.1x, and 802.11iCisco CCS V1.0, 2.0 and V3.0 CompliantOperation ConditionsVoltage/Current Range* ...