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RJ-45 pin specification 53
RJ-45 to DB-9 serial adapter with flow control pin
assignment
RJ-45 signals RJ-45 pins DB-9 pins DB-9 signals
Request to send (RTS) 1 8 Clear to send (CTS)
Data set ready (DSR) 2
Data carrier detect (DCD) 3
Receive data (RxD) 4 3 Transmit data (TxD)
Transmit data (TxD) 5 2 Receive data (RxD)
Ground (GND) 6 5 Ground (GND)
Data terminal ready (DTR) 7
Clear to send (CTS) 8 7 Request to send (RTS)
(Not connected) 9