Just to the right of the lens is the front Infra-red sensor for the remote control. Below the lens, and slightly off-center, is the single front foot. It is screw thread adjustable for height. I should note that there are also 2 rear feet (at the far back on each side. These are also screw adjustable, but these two each have a drop release button as well. With all feet unextended, the projector projects the image upward slightly, relative to the projector placement.
Moving to the top, directly behind the lens are the manual adjustment rings for zoom and focus. Further back is the control panel.
The control panel itself is pretty basic. In addition to a large power button, there are only six additional buttons but several have two functions. Looking from the rear, the lower left button brings up the menu. Navigation is then handled by the four arrow keys, and in the center of those, the Enter button. When not using the menu, the up arrow doubles to handle auto setup, the left and right arrows do source selection (the left one computer, the right one, video).
The input panel is located on the back of the projector. The selection is pretty basic: 1 HDMI input for a digital source, one HD15 computer input for a typical analog computer source, or it can be used for a component video signal. Then, there is the usual 3 RCA jacks for Component video, allowing a total of 2 component video sources, if you aren't hooking up a computer. In addition there are the usual S-video and composite video inputs.
The Mitsubishi HC3000 also has a serial port and USB for "command and control". Lastly, the HC3000 also sports a 12volt Trigger jack for controlling a compatible motorized screen (most motorized screens have 12 volt control as an option, some versions standard. Lastly, there is a second IR (infra-red) sensor for the remote, and the power receptacle.