Alfa AWUS036NHR - High-Gain 2000mw 2W 802.11 B/G/N Wireless USB Network Adaptor - Wireless-N 802.11n Wi-Fi - 150Mbps - 2.4 GHz - 5dBi Antenna - Long Range - Realtek Chipset - Strongest on the Market - NEWEST VERSION Includes a convenient Utility for scanning available networks and saving preferred networks that users usually connected with Compatible with IEEE 802.11b, 802.11b and 802.11bn wireless standards 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 - Mac (10.4.x/10.5.x/10.6.x) Power PC& PC High security Wireless data encryption with 64/128-bit WEP, WPA, WPA2, TKIP, AES4n, 802.1X support, WPA-PSK, WPA II-PSK, Cisco CCX support, WAPI-PSK, WAPI-CERT