This is a great card for Backtrack; it uses the RT8187L chipset which is well known to Backtrack and a popular one at that. It is probably one of the more widely used Backtrack USB adapters out there. In fact the one I ordered came with a Backtrack boot DVD and instructions.
I did some penetration testing with this card and found it to be fast, strong and reliable. All of this was done with Backtrack 5 and VMware. The card also came with drivers but I did not have to use them. As for the range I think this is one of the better cards I have used or at least equal to other top cards. It picks up signals from very far away.
A combination of range and the price (this adapter comes cheap) makes this impressive. Most ship with the 5 dbi 1000 mW antenna but can be upgraded to the 7 or 9 dbi 2000 mW. There are YouTube videos that show how to unlock some features of the card also which I have not tried yet.
If needed it also works well with windows XP and Windows 7 although I did have to update the Windows 7 drivers from their website which was quick and easy.
WPA/WPA2 capture with Backtrack 5 with Alfa AWUS036H USB adapter.
Videos Cracking WEP Encryption with Backtrack using the Alfa AWUS036H
Disclaimer: All information on this site is for testing and educational purposes only; for use by network security administrators or testing the security of your own wireless connection.