Bottom view, showing the MicroSD card, which deliberately sticks out of the case for easier removal. Two different screws were used to hold the board on to the bottom, due to the unusual threading used for the PoE hat coupling nut. My hardware store had bolts for that threading, but no nuts, and they have a smaller head size which I wasn't thrilled with. So I used better, easier to obtain bolts where I didn't have to mate with the coupling nuts, and in a threading I could actually get nuts for.