B-9
Catalyst 2950 Desktop Switch Hardware Installation Guide
78-11157-02
Appendix B      Connectors and Cables
Cable and Adapter Specifications
Rollover Cable and Adapter Pinouts
This section describes how to identify a rollover cable and also describes the 
adapter pinouts.
Identifying a Rollover Cable
You can identify a rollover cable by comparing the two modular cable ends. Hold 
the cable ends side-by-side, with the tab at the back. The wire connected to the 
pin on the outside of the left plug should be the same color as the wire connected 
to the pin on the outside of the right plug. (See Figure B-12.)
Figure B-12 Identifying a Rollover Cable
Connecting to a PC
Use the supplied RJ-45-to-RJ-45 rollover cable and RJ-45-to-DB-9 female DTE 
adapter to connect the console port to a PC running terminal-emulation software. 
Figure B-13 shows how to connect the console port to a PC. Table B-2 lists the 
pinouts for the console port, the rollover cable, and the RJ-45-to-DB-9 adapter.
Pin 1
H10632
Pin 8
Pin 1 on one connector and 
pin 8 on the other connector
should be the same color.