It seems like such a simple question, but the USB Socket?

You don’t need to ‘dismantle’ anything. Remove the AMS unit (if fitted), and the top glass, you will see the socket best from the side that the door opens, not the back as others have suggested.

It’s a b*tch to get to, and actually getting a plug into it was far from easy. So, there you have it, plenty of power for an ESP32-CAM module or two.