Cisco Catalyst 3550

Appendix B Connector and Cable Specifications
Cable and Adapter Specifications
B-6
Catalyst 3550 Multilayer Switch Hardware Installation Guide
78-11358-01
Adapter Pinouts
Table B-1 lists the pinouts for the console port, the RJ-45-to-RJ-45 rollover cable,
and the RJ-45-to-DB-9 female DTE adapter.
Table B-1 Console Port Signaling and Cabling Using a DB-9 Adapter
Switch
Console
Port (DTE)
RJ-45-to-RJ-45
Rollover Cable
RJ-45-to-DB-9
Terminal Adapter
Console
Device
Signal RJ-45 Pin RJ-45 Pin DB-9 Pin Signal
RTS 1 8 8 CTS
DTR 2 7 6 DSR
TxD 3 6 2 RxD
GND 4 5 5 GND
GND 5 4 5 GND
RxD 6 3 3 TxD
DSR 7 2 4 DTR
CTS 8 1 7 RTS