here is certainly not an exceptional number of inputs. (I gather that if you need tons of them, the C3X Link version is for you. The C3X does have all the essentials:
There is an HDMI input. Component video is handled by the usual 3 RCA plugs, although there is a 4th, for h/v (horizontal and vertical sync) which could be used as a data input.
For your analog computer, there is a standard HD15 computer input. For screen control there are a pair of 12V outputs, so you can control a motorized screen, and the second one could be used to control a screen mask. Of course, you'll find a regular composite video input (RCA) and S-Video (DIN). There is also a jack to hardwire the remote. An RS-232 is there for command and control and also a USB port. Finally, you'll find The power switch and receptacle for the AC power cord.
Underneath are two screw adjustable rear feet. You can also see the swing out handle center front.
To the front left side, is the lamp compartment door. There is an integrated handle around the front center foot (the foot is not adjustable) that tucks away when not needed. How often someone needs a handle on a projector that is almost certain to be mounted, I surely don't know, but it's there.
One note, Sim2 recommend that there be at least 2 and 9/16 inches clearance between the bottom of the projector (which is inverted) and the ceiling, for ventilation. If you use a 3rd party mount, it also must not block the bottom vent.