Select System ... its audio output to the speaker’s audio input via Bluetooth. A microphone is a device that allows a user to send audio information to a computer for recording or processing.

Read: Audio Input and Output device uninstalled upon restart ... You can do this by pressing Windows + I on your keyboard. Go to the System section, scroll down and click the Troubleshoot ...

Devices that the computer system uses to send out or display information from the processor are called output devices.