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Black Box Hardened Managed Ethernet Switch
154 User’s Manual
Appendix A
B9 DCE pin assignment
Pin no. Name RS232 Signal name
1 DCD Data Carrier detect
2 RxD Received data
3 TxD Transmit data
4 --- N/C
5 GND Signal ground
6 DSR Data set Ready
7 --- N/C
8 CTS Clear to send
9 --- N/C