http://images.anandtech.com/reviews/gadgets/microsoft/valhalla/DVDtop.jpgtheultimo said:Looking at anandtechs teardown, it looks like there is a vent hole there. When stood up vertically, there are rubber pads that move it about an inch off the ground. You are right. I never noticed it when it stoop up vertically.
http://www.anandtech.com/Gallery/Album/707
I guess it's for the big fan. Since the holes are beside the fan, does air get sucked in?