Appendix B Connectors and Cables
Cable and Adapter Specifications
B-10
Catalyst 2950 Desktop Switch Hardware Installation Guide
78-11157-03
Cable and Adapter Pinouts
This section describes the cable and adapter pinouts and also describes how to
identify a rollover cable.
Connecting to a PC
Use the supplied RJ-45-to-DB-9 adapter cable to connect the console port to a PC
running terminal-emulation software. Figure B-12 shows how to connect the
console port to a PC. Table B-2 lists the pinouts for the console port and the
RJ-45-to-DB-9 adapter cable.
Figure B-12 Connecting the Console Port to a PC
Table B-2 Console Port Signaling and RJ-45-to-DB-9 Adapter Cabling
Console
Port (DTE)
RJ-45-to-DB-9
Adapter Cable
Console
Device
Signal RJ-45 Pin DB-9 Pin Signal
RTS 1 8 CTS
Not connected 2 6 DSR
TxD 3 2 RxD
GND 4 5 GND
GND 5 5 GND
RxD 6 3 TxD
Not connected 7 4 DTR
CTS 8 7 RTS
PC
74587
RJ-45-to-DB-9
adapter cable
Catalyst 2950 switch
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