The Home Cinema 2150, and, of course, the HC2100 too, have a recessed lens, positioned slightly off-center, toward the left when facing the projector. Just to its right, down near the bottom, is the front IR sensor for the Epson's remote control. Directly below the center front, is a drop down adjustable foot.
On the left hand side of the projector, we have the hot air exhaust vent. This vent, I noticed, glows purple in a fully darkened room, which I thought was pretty cool, but unlike many competing DLP projectors, there's no serious amount of light leakage hitting your walls. On the opposite side of the HC2150, there is the cool air intake vent. On the back, we have the inputs and connectors and the 10-watt speaker. Down below the back are two more feet - both screw thread adjustable types that give the HC2100 and HC2150 a stable 3 point stance.
The top of the projector has a lot going on. Directly above the lens, there’s a slider that closes the lens door. This protects the lens from dust when not in use, and also acts as an A/V Mute when the projector is on. Behind that, in the recessed area, are the lens controls. There is a focus slider, then the slider for zoom, followed by the dial for lens shift. All of these controls are manual, as is to be expected on a projector at this price point.
Right behind those, outside of the recessed area, is the horizontal keystone slider. For vertical keystone correction, you’ll have to go to the control panel, which is located at the back of the projector on the top.