B-6
Catalyst 2975 Switch Hardware Installation Guide
OL-17784-01
Appendix B Connector and Cable Specifications
Cables and Adapters
Console Port Adapter Pinouts
The console port uses an 8-pin RJ-45 connector. The supplied RJ-45-to-DB-9 adapter cable is used to
connect the console port of the switch to a console PC. You need to provide a RJ-45-to-DB-25 female
DTE adapter if you want to connect the switch console port to a terminal. You can order a kit (part
number ACS-DSBUASYN=) containing that adapter from Cisco.
Table B-2
Console Port Signaling with a DB-9 Adapter
Switch Console
Port (DTE)
RJ-45-to-DB-9
Terminal Adapter
Console
Device
Signal
DB-9 Pin
Signal
RTS
8
CTS
DTR
6
DSR
TxD
2
RxD
GND
5
GND
GND
5
GND
RxD
3
TxD
DSR
4
DTR
CTS
7
RTS
Table B-3
Console Port Signaling with a DB-25 Adapter
Switch Console
Port (DTE)
RJ-45-to-DB-25
Terminal Adapter
Console
Device
Signal
DB-25 Pin
Signal
RTS
5
CTS
DTR
6
DSR
TxD
3
RxD
GND
7
GND
GND
7
GND
RxD
2
TxD
DSR
20
DTR
CTS
4
RTS
