Identifying A Crossover Cable - Cisco 3750G-12S - Catalyst Switch - Stackable Hardware Installation Manual

Cable and Adapter Specifications

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 B-11
Pin 1
Four Twisted-Pair Cable Pinouts for 1000BASE-T Ports
Figure B-12
Catalyst 3750 switches.
Figure B-12
Switch
1 TPO+
2 TPO-
3 TP1+
6 TP1-
4 TP2+
5 TP2-
7 TP3+
8 TP3-
Catalyst 3750 Switch Hardware Installation Guide
B-8
Identifying a Crossover Cable
Pin 1 on one connector and
pin 1 on the other connector
should be different colors.
and Figure B-13 show the schematics of four twisted-pair cables for 10/100/1000 ports on
Four Twisted-Pair Straight-Through Cable Schematic for 10/100/1000 Ports
Router or PC
1 TP1+
2 TP1-
3 TPO+
6 TPO-
4 TP3+
5 TP3-
7 TP2+
8 TP2-
Appendix B Connector and Cable Specifications
Pin 1
Figure B-11.)
OL-6336-10