Acers are like that in my experience. The last one I got with the complaint of "being too slow" had half the case empty because they re-used the old case that was supposed to have a CD-drive in it. And, in it's place, there was a fan with no heatpipes, no radiator, nor even any holes on the bottom, just some spacers so it sucks and recirculates the air from within the case, and blows it somewhere in the general direction of the motherboard, where, a fucking mile away, there's a G-shaped piece of foil with just TWO fins slapped on top of the CPU.

The two gigs of ram are, of course, soldered on, and there was already an ssd (though, on SATA and no secondary port either). So I just settled on blowing the dust out and swapping whatever sludge they had for a decent thermal paste, put Xubuntu on it and advised the nearest recycling plant's address. Of course, I could drill some holes and hack some better thermal solution, but I found that this 5+yr Celeron machine with 720p TN panel is just not worth any effort. It was brand new, btw...