Apple TV/FM Radio System - Manual (Page 22)

15 Installing the Card and Software
6 Remove the cover from its opening by squeezing together
the plastic tabs that hold it in place.
Store the access cover; you may want to put it back in place
it if you ever remove the TV/FM tuner card.
Squeeze the two plastic tabs
together and pull off the metal
retainer so the access cover
can come off.
Metal retainer
Plastic back panel