COM 1 to COM 4 MB connector table :
COM Port
COM 1
COM 3
CN
CN61 to CN64
©Vecow ECX-2600/2400/2300 PEG User Manual
MB Connector
CN61
CN63
Pin No.
1
2
3
4
5
6
7
8
9
10
GETTING TO KNOW YOUR ECX-2600/2400/2300 PEG
COM Port
MB Connector
COM 2
COM 4
Signal Name
NC
GND
RI
DTR
CTS
TXD
RTS
RXD
DSR
DCD
CN62
CN64
CN63
CN61
CN64
CN62
33