All of the JVC projector's connectors are located on the back left side. The top row starts with a pair of HDMI 1.4a connectors. There's also a LAN connector, and an RS-232 serial port for possible updates and other uses.
Next up, are three RCA connectors for the component video input. There are no composite or S-Video inputs. The rear IR sensor for the remote, is to the right of the component video (and hard to see in the image above.)
The bottom row has the sync port (a DIN connector) for the external 3D sync device. Finally, there is a 12 volt screen trigger for controlling a motorized screen or masking system, and a hard wire for the remote control should the projector be where it can't "see" the IR signal from the remote (usually a rear screen setup).
Missing are the usual S-video and composite video inputs.
Just a couple years ago, that would have been limiting to many. It's less of a challenge today. I can feed an HDMI signal MacBook right in through one of the HDMI ports. HDMI is used more and more. The PC input, it should be noted can handle more than one type of source.