Alfa AWUS036NHA Wireless B/G/N USB Adaptor - 802.11n - 150 Mbps - 2.4 GHz - 5 dBi Antenna - Long Range - Atheros Chipset - Windows XP/Vista 64-Bit/128-Bit Windows 7 Compatible Compatible with any brand 802.11b, 802.11g or 802.11n router using 2.4 Ghz wave-length Includes a 4 inch 5 ddbi screw-on swivel rubber antenna that can be removed and upgrade up to 9 dbi Supports the following security protocols: 64/128-bit wep, wpa, wpa2, tkip, aes Compatibility: Windows 2000, XP 32/64, vista 32/64, Windows 7 High transmitter power of 28 dbm - for long-rang and high gain Wi-Fi