If you are using a USB microphone (as we recommend), or a professional grade microphone via a USB audio interface, you should be able to find and select the microphone (or the audio interface) in the Settings dialog Microphone drop
If you are using a USB microphone (as we recommend), or a professional grade microphone via a USB audio interface, you should be able to find and select the microphone (or the audio interface) in the Settings dialog Microphone drop