Cisco Systems 520 manual Cable and Adapter Specifications, Two Twisted-Pair Cable Pinouts

Appendix A Reference

Cable and Adapter Specifications

Cable and Adapter Specifications

These sections describe the cables and adapters used with the switch.

•Two Twisted-Pair Cable Pinouts, page A-13

•Four Twisted-Pair Cable Pinouts for 1000BASE-T Ports, page A-14

•Crossover Cable, page A-15

Two Twisted-Pair Cable Pinouts

Figure A-8and Figure A-9show the schematics of two twisted-pair cables for connecting to 10BASE-T- and 100BASE-TX-compatible devices.

Figure A-8

Switch

3TD+

6 TD–

1RD+

2 RD–

Figure A-9

Switch

3TD+ 6 TD–

1RD+ 2 RD–

Two Twisted-Pair Straight-Through Cable Schematic

Router or PC

3 RD+ 6 RD–

1 TD+	H5578
2 TD–

Two Twisted-Pair Crossover Cable Schematic

Switch

3TD+

6TD–

1 RD+	H5579
2 RD–

	User Guide for the Catalyst Express 520 Switches
OL-12761-02		A-13