L-4533A/L-4533AW/L-4033A/L-4033AW Operation Guide Introduction External Image from the Rear 19 Letter Name Explanation a Rear fan A fan for exhausting air. b Network connector Connects the network cable. c Intake and exhaust vent An intake and exhaust vent for the heater. d Breaker Set to ON to supply power to the press. Turn the breaker OFF to stop supplying power to the press.