For users who want the latest possible stability, the community has released modified drivers. These take the Windows 8.1 driver suite and patch the installation files ( .inf ) to allow installation on Windows 10 and 11 without disabling driver signature enforcement.
If you are unsure which driver to download, find your Hardware ID. Atheros Ar5b22 Driver
There are three primary sources for this driver. Using the wrong one leads to Wi-Fi working but Bluetooth failing, or vice versa. For users who want the latest possible stability,