A RS232 Port
B Terminal Resistor for Parallel function
C CAN Bus Connection Port for Parallel System
D Customer Options Slot 1
E Customer Options Slot 2
F Cooling Fan
G External Battery Connector
I Utility Input Breaker CB1
J Bypass Input Breaker CB2 ( for Dual Input Model Only )
K CAM Switch ( Maintenance Bypass Switch ) *
L Input/Output Terminal Block
N EPO(Emergency Power Off): Short to enable the function
P Air Ventilation Hole
Q Temp. Comp.
*: Option