Key Features :
The Alfa AWUS036H is the latest version of the most powerful card available. This has a stunning 1000mW output power. So if you are looking for a device to connect to an outdoor 2.4 GHz antenna such as on a boat or an RV this is a perfect solution. It outperforms wireless cards that are built in to newer laptops. Adding this to your laptop or desktop computer will enhance range and signal quality at longer distances. And works with Win98SE 200 ME XP Windows Vista Windows 7 Linux (kernel 2.6.6 and later) and Macintosh (OS version 10.4). And the necessary drivers for ALL of these operating systems are included on CD-ROM Connects at a full 54Mbps via USB 2.0 up to 8 times faster than a USB 1.1 adapter High gain upgradeable 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 802.11 Data Rate 802.11b: UP to 11Mbps 802.11g: 54Mbps Antenna Type 1 x 2.4Ghz SMA connectorChipset Realtek 8187LOutput Power 24dBm (OFDM) 30dBm(CCK)Frequency Stability within +25 ppmData Modulation Type BPSKQPSK CCK and OFDMSecurity WEP 64 128 802.1X support Wi-Fi Protected Access (WPA) WPA-PSK WPA II .Dimensions 8.5 x 2.2 x 6.3cmWeight 38.5gFor MAC OS 10.6.7 and later version we suggest AWUS036NHR AWUS036NH WUS036NEH AWUS051NH. Features 1) 1000mW of power which is more powerful than any other WiFi adapter on the market - includes a 5dBi antenna for better reception 2) Very Secure with 64 128 256bit WEP Encryption TKIP WPAWPA2 802.11i 3) 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) 4) The Mount design to easily clinging on Notebook Netbook and Window.