After installing the AirPcap NX driver and following the installation instructions, the AirPcap NX adapter is not recognized in the Windows Device Manager.
If the device does not show under Device Manager -> Packet Capture Devices, look for another wireless device with a question mark (usually under "Other devices").
In the example below an AirPcap Nx is not programmed and is listed as "USB 2.0 WLAN" under Windows Device Manager:
Incorrect device listing:
This is an example of a properly installed AirPcap Nx card:
Correct device listing: