Alfa AWUS036H - 802.11b/g USB Wireless Network Adapter - 1000mW 1W - High Gain - Long-Rang Wi-Fi Adapter - 5dBi Antenna - With a 5m (16.4 Feet) USB Extension Cable Includes a 4-inch 5 DdBi Screw-On Swivel Rubber Antenna that can be removed and upgrade up to a 9dBi antenna Includes driver for Windows 2000, XP 32/64, Vista 32/64, Windows 7, Linux (2.4.x/2.6.x), Mac (MacOS 10.3 - 10.5) For MAC OS 10.6.7 and later version, we suggest AWUS036NHR, AWUS036NH, AWUS036NEH, AWUS051NH. High security 64/128/256bit WEP Encryption, TKIP, 802.1X support, Wi-Fi Protected Access - WPA, WPA-PSK, WPA II Plug-and-Play Compatible with windows 98SE, 2000, Millennium, XP and Linux