Cisco Systems 520 manual Connector Specifications

Appendix A Reference

Connector Specifications

Connector Specifications

This section describes the connectors on the switch.

•10/100 and 10/100/1000 Ports, page A-5

•SFP Module Ports, page A-8

•Dual-Purpose Ports, page A-9

10/100 and 10/100/1000 Ports

The 10/100 and 10/100/1000 Ethernet ports use standard RJ-45 connectors and Ethernet pinouts with internal crossovers. These ports have the send (TD) and receive (RD) signals internally crossed so that a twisted-pair straight-through cable and adapter can be attached to the port. Figure A-3shows the pinout for a 10/100 port.

Figure A-3 10/100 Port Pinouts

Pin Label

1RD+

2RD-

3TD+

4NC

5NC

6TD-

7NC

8NC

1 2 3 4 5 6 7 8

H5 183

	User Guide for the Catalyst Express 520 Switches
OL-12761-02		A-5