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2. Definition of the UT-6604M-I/6608M-I serial pins
RJ45
3. Definition of the UT-6616M-I serial pins
RJ45
RJ45
RS-232 RS-485
HALF
RS-485
FULL
RS-422
1 TxD DATA+ TxD+
TxD+
2 RxD DATA- TxD-
TxD-
3 RTS
RxD+
RxD+
4 CTS
RxD-
RxD-
5 DSR
6 GND GND
GND
GND
7 DTR
8 DCD
RJ4
5
RS-232
RS-485
HALF
RS-485 FULL
RS-422
1 TxD
RxD+ 1
RxD+ 1
2
RxD
TxD+ 2
TxD+ 2
3 RTS
RxD- 3
RxD- 3
4
CTS
TxD- 4
TxD- 4
5 DSR
6
GND
GND 6
7 DTR
8 DCD