The Famous Alfa 1000mW based on the RealTek 8187 Chipset. When searching for a good foundation to build your long range WiFi kit 1 Watt of power is not a bad idea, especially when commercially sold adapters are only doing about 50mW. The Adapter is supported by All Windows and Mac operating systems. As well as plug and play with Linux. For all you “internet security specialist” this card is fully supported by Back Track and also doing Packet injections. From Alfa you get 5 ft of USB cable and a 5dBi antenna with anti-counterfeit sticker and hologram. We Guarantee Authenticity. Max Range 600 yards

• Connects at a full 54Mbps via USB 2.0, up to 8 times faster than a USB 1.1 adapter
• Connects to high gain WiFi antennas
• Compact size for greater flexibility
• Also compatible with USB 1.1 desktop and notebook computers
• Plug-and-Play Compatible with windows 98SE, 2000, Millennium, XP and Linux
• High security 64/128/256bit WEP Encryption, TKIP, WPA,WPA2 802.11

AWUS036H does not support Mac OS 10.6.7 and later versions.