You open SDR#, SDR Console, or CubicSDR. You plug in your $200 Airspy. You expect pure, clean I/Q signals. Instead, you get a grayed-out dropdown menu, a red status bar, or the console log simply stating: No device available.
Does your device show up in Windows Device Manager, or is it completely missing from the list? DSD+ and Airspy HF+ Discovery not being found? airspy no device available
airspy_info