Cisco Catalyst 3550

Appendix B Connector and Cable Specifications
Cable and Adapter Specifications
B-4
Catalyst 3550 Multilayer Switch Hardware Installation Guide
78-11358-01
Console Port
The console port uses an 8-pin RJ-45 connector, described in Table B-1 and
Table B-2. The supplied RJ-45-to-RJ-45 rollover cable and DB-9 adapter are 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. For console port and adapter pinout
information, see Table B-1 and Table B-2.
Cable and Adapter Specifications
This section describes the cables and adapters used with Catalyst 3550 switches.
Crossover and Straight-Through Cable Pinouts
The schematics of crossover and straight-through cables are shown in Figure B-5
and Figure B-6.
Figure B-5 Crossover Cable Schematic
Figure B-6 Straight-Through Cable Schematic
Switch
3 TD+
6 TD–
1 RD+
2 RD–
Switch
3 TD+
6 TD–
1 RD+
2 RD–
H5579
Switch
3 TD+
6 TD–
1 RD+
2 RD–
Switch
3 RD+
6 RD–
1 TD+
2 TD–
H5578