Installation guide

B-7
Catalyst 3750 Switch Hardware Installation Guide
OL-6336-01
Appendix B Connector and Cable Specifications
Cable and Adapter Specifications
Four Twisted-Pair Cable Pinouts for 1000BASE-T Ports
Figure B-10 and Figure B-11 show the schematics of four twisted-pair cables for
10/100/1000 ports on Catalyst 3750 switches.
Figure B-10 Four Twisted-Pair Straight-Through Cable Schematic for
10/100/1000 Ports
Figure B-11 Four Twisted-Pair Crossover Cable Schematics for 10/100/1000
and 1000BASE-T SFP Module Ports
1 TPO+
2 TPO-
3 TP1+
6 TP1-
1 TP1+
Switch Router or PC
2 TP1-
3 TPO+
6 TPO-
4 TP2+
5 TP2-
7 TP3+
8 TP3-
4 TP3+
5 TP3-
7 TP2+
8 TP2-
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1 TPO+
2 TPO-
3 TP1+
6 TP1-
1 TP0+
Switch Switch
2 TP0-
3 TP1+
6 TP1-
4 TP2+
5 TP2-
7 TP3+
8 TP3-
4 TP2+
5 TP2-
7 TP3+
8 TP3-
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