I think you are seeing a second version of the back which is used on the Aluminum models Vs the Stainless Steel models. If you make your way to an Apple Store I’m sure you can get them to put the plates back on. I suspect they are press fit not screwed as the threads are to offer a grip for the plastic pin.
I think you are seeing a second version of the back which is used on the Aluminum models Vs the Stainless Steel models. If you make your way to an Apple Store I’m sure you can get them to put the plates back on. I suspect they are press fit not screwed as the threads are to offer a grip for the plastic pin.