Detailed Description Model: GWF-2B22 Ralink RT2571 MAC/BBP with RT2528 Transceiver Main Features: 802.11b: 1, 2, 5.5, 11Mbps; 802.11g: 6, 9, 12, 24, 36, 48, 54Mbps Peak rate 54Mbps, Peak throughput 27Mbps Power management Certification Wi-Fi Certification: 802.11 b/g, WPA, WPA2, WMM, WMM-PS WHQL, Cisco CCX, USB-IF Hardware Chipset :Ralink RT2571 + RT2728 Host interface: USB2.0/1.1 type A (4 pin header) LEDS; link/Acticity  RF Antenna: Builted-in PCB On Board  Frequency: 2412~2483.5 MHz, ISM band  Transmit Power: 802.11b: 17+/-1.5dBm; 802.11g: 14+/-1.5dBm;  Receive Sensitivity: 802.11b: -84dBm@11Mbps; 802.11g: -68dBm@54Mbps Software Operation System :Windows CE/2000/XP/Vista; Linux; Mac OS X Security: WEP 64/128, WPA, WPA2, 802.1x, Cisco CCS V1.0, 2.0 and V3.0 Compliant Operation Conditions Voltage Range: DC 5.0V ± 5% Operating Temperature: 0°C - 50°C Storage Temperature: -20°C - 70°C Operating Humility: RH 95% (Non-Condensing) Storage Humidity: RH 95% (Non-Condensing) Physical Specification Dimentions: 70*20*9.7mm