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A-7
Catalyst 2960 Switch Hardware Installation Guide
OL-7075-05
Appendix A Connector and Cable Specifications
Cable and Adapter Specifications
Figure A-8 Four Twisted-Pair Crossover Cable Schematics for 10/100/1000 Ports
Crossover Cable and Adapter Pinouts
This section describes how to identify a crossover cable and also describes the adapter pinouts.
Identifying a Crossover Cable
To identify a crossover cable, compare the two modular ends of the cable. 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 a different color from the wire connected to the pin on the inside of the right plug. (See
Figure A-9.)
Figure A-9 Identifying a Crossover Cable
1 TPO+
2 TPO-
3TP1+
6TP1-
1TP0+
Switch Switch
2TP0-
3TP1+
6TP1-
4TP2+
5TP2-
7TP3+
8TP3-
4TP2+
5TP2-
7TP3+
8TP3-
65274
Pin 1
200915
Pin 1
Pin 1 on one connector and
pin 1 on the other connector
should be different colors.