wifi usb adapter picture and specifiation as follow:  Host InterfaceMini USBStandardsIEEE 802.11b  IEEE 802.11gAntenna TypeExternal detachable antenna(5dBi)Wireless Frequency Range2.412GHz-2.4835GHzWireless Signal Rates (With automatic fallback)802.11b(11Mbps,9Mbps, 6Mbps, 5, 5Mbps, 2Mbps, 1Mbps)801.11g(54Mbps, 48Mbps, 36Mbps, 24Mbps, 18Mbps, 12Mbps, 11Mbps, 9Mbps, 6Mbps)Wireless Transmit Power25dBm(MAX)Modulation11g: Orthogonal Frequency Division Multiplexing (OFDM)54Mbps/48Mbps:QAM-6436Mbps/24Mbps:QAM-1618Mbps/12Mbps:QPSK9Mbps/6Mbps:BPSK11b: Direct Sequence Spread Spectrum(DSSS)11Mbps/5.5Mbps:CCK2Mbps:DQPSK1Mbps:DBPSkModulation Technique802.11b: Direct Sequence Spread Spectrum (PBCC, CCK, DQPSK, DBPSK)802.11g: Orthogonal frequency division multiplexingSecurity: Hardware-Based Encryption/Decryption Using 64-128-bit Wired-Equivalent Privacy(WEP)keys, WPA and WPA2 are also supported.Range: indoorsup to 150meters (Theoretical value)Outdoorsup to 500meters (Theoretical value)LED IndicatorsLink/ActivityUse environmentTemperature:0°C - 50°C (operating), -20°C 70°C (storage)Humidity:5%-95% non-condensing (operating),5%-95% non-condensing (storage)