The system controller/ operator panel is held in place with one screw

Remove the screw and pull the panel out of it's tabs.

The system controller contains a keyswitch to start and stop the machine, a LCD display that shows a nifty CPU usage graph when running, and 4 operator buttons to control the system controller.

This console can display fan speed and temperature, power supply voltages, and logged error messages.

How many computers do you know of that start up with an ignition key? :)