Summary: I have Alfa units from AWUS036H to AWUS036NHRv2. They make great products and reasonable price. It works absolutely better than any built in card and extend the wifi signal. I recommend Alfa product to all my friends.
Summary: Works well and the USB cable is quite long so placement can be in the best place for reception. Watch when using Windows XP the bundled application has a memory leak and after about 2 days the machine crashes because there is no more memory. I switched the setting to use the built in Windows WIFI configuration and the problem went away.
Summary: The device works great on my old XP computer (32-bit) and greatly improved the weak signal, but on the Windows 8 box it would install and connect fine, but as soon as actually used, it would no longer see any networks. It was partially my problem as the specs did not list Windows 8 as a compatible system. I assumed that if it would on a Windows 7, it should on a Windows 8 (64-bit).