From 9to5Mac:
Nobody is going to be able to access this themselves without specialized tools.
Yes, they poked it out from the inside, but it's obviously held in place by friction only:
So, with a specialized tool, it should be possible to remove it from the outside. (there must be a reason for that tiny indent on the cover) Otherwise, why make a diagnostic port with contacts facing outside if it requires full disassembly?!