Axe FX ultra front bolts

[nriq]

Does anybody know what the two front socket bolts are holding on some Axe FX ultras?
I have noticed that not all devices have them.

I got this Ultra as trade for a guitar but it looks like the front plate is a bit concave shaped and the top cover does not sit perfectly in place because of that. I suspect one of these "socket bolts" is over tighten creating this concave shape towards the inside of the Ultra, but I don't want to try loosing it lest something else falls inside.
I don't want to try opening it.

What do you think?

 

[paranoid]

if it aint broken don't fix it! actually it wouldn't, shouldn't be a big deal to unplug it"I stress Unplug it" and take the top off to look inside, don't touch any thing silver or shinny just in case.