Ventilation holes
Prevent overheating.
Power connector
Connect the power cord to the printer. Insert the other end into an electrical outlet.
Cable cover
Remove this cover to connect various cables.
Rear cover
Raise this cover and attach the paper tray cover when loading paper larger than A4 or letter size paper.
Ethernet port
Use a network interface cable to connect the printer to a network.
USB port B
Use a USB cable to connect the printer to a computer.