Where is the microphone located on my 21.5 inch, 2017 iMac?

Look just left of the camera lens. You have to shine a light across it at a low angle angle to see it well, like

I did to take this picture of my 2017 iMac:

chrisgalway1 wrote:

Thanks for the fast reply. I'm curious (and cannot see by looking), are there actually holes drilled in the glass? If so, they must be very small!

Not sure either even after looking though a strong lens. Whatever it it is clever!