Tokkisurf Said:
"Optical out Mac pro 2019? MacBook Pro Microphone:"
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Reinstall the macOS:
This is an input device, correct? By what you've provided, it is only showing the Mac's microphone - not this device. So, try reinstalling the macOS, getting all of the drivers reinstalled.
First, Back up your Mac:
Create a Time Machine backup of your Mac, so that you can have something to restore your Mac from, should anything go wrong with the reinstall.
Then, Reinstall the macOS:
Nothing would be deleted. It's just that items that have become corrupted or deleted, would be replaced or reinstalled back to where they should be. Go Here: How to reinstall macOS from macOS Recovery - Apple Support