B-8
Catalyst 3750-E and Catalyst 3560-E Switch Hardware Installation Guide
OL-9774-03
Appendix B Connector and Cable Specifications
Cable and Adapter Specifications
Figure B-10 Four Twisted-Pair Crossover Cable Schematic
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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Two Twisted-Pair Cable Pinouts
Figure B-11 and Figure B-12 show the schematics of two twisted-pair cables.
Figure B-11 Two Twisted-Pair Straight-Through Cable Schematic
Switch
3 TD+
6 TD–
1 RD+
2 RD–
Router or PC
3 RD+
6 RD–
1 TD+
2 TD–
H5578
Figure B-12 Two Twisted-Pair Crossover Cable Schematic
Switch
3 TD+
6 TD–
1 RD+
2 RD–
Switch
3 TD+
6 TD–
1 RD+
2 RD–
H5579