Note that we do not advertise or promote the use of AWUS036H on Windows 10. We have better and faster options available for purchase such as the newer AWUS036ACH.
But if you already own an AWUS036H and find yourself wanting to use it on Windows 10, here is a quick way how to do it.
The last driver made for this item was December of 2009 for Windows 7. The installer package for Windows 7 does not work on Windows 8 or 10, it just says "incompatible operating system" when you try and run it. So you need to run it in Windows 7 compatibility mode.
Step 1: Download Win7 driver (https://www.rokland.com/mask/drivers/alfa/awus036h_windows_7.zip)
Step 2: Open the downloaded zip file and extract the contents to a place on your computer you can find.
Step 3: Navigate to where you extracted the contents. Right-click the Setup.exe program and select Properties. Click the Compatibility tab and under Compatibility mode choose "Windows 7" and make sure the "Run this program in compatibility mode" is checked. Then click Apply and exit the Properties window. This should bypass the compatibility error.
Step 4: Run the Setup.exe program in full and restart the PC when done.Connect your AWUS036H to the PC and use as normal.
Military and First Responder 
Many thanks for taking the trouble to write up how to run your older device on Win 10. I do have one of your newer units also. Good luck keep up the good work.
I’ve got more than my moneys worth out of it, very happy with my purchase made like a decade ago. Having the driver for download is huge as Alpha has a less than adequate site with broken links.
Merci beaucoup, super tutoriel.
Loved Rokland llc’s answer. . it showed measured restraint on their part. lol. Also, cudos to be so thorough that it left virtually no where to even wiggle. So yeah, im sold on anything you’re selling. :)
Excellent “Quick way how to guide” installing Alpha wifi AWUS036H to Windows10.
I just followed the simple instructions and the (link) and this old dongle’s ready for
years more service. Thanks