How to Check Your Mic, Camera and Speakers in Teams
Teams will automatically set your default mic, camera and speakers based on your Windows settings. If you have multiple input / output devices (eyeball camera with laptop, clip on monitor camera with laptop, headphones with laptop etc), you may want to confirm your default devices are connected and set correctly BEFORE your meeting. To confirm your playback devices in Teams, follow below:
Open the Teams Window > click the three dots next to your initials or profile picture at the top right hand corner of the Window.
Click Settings
Go to the "Devices" option on the left > confirm you see settings under Speaker, Microphone, and scroll down a bit to see Camera (you will see yourself).
You can also make a test call from this screen to verify all your devices are functioning properly.