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APPENDIX A
RJ-45 PIN SPECIFICATION
When connecting your FSD-series 10/100Mbps Ethernet Switch to another switch, a
bridge or a hub, a straight or crossover cable is necessary. Each port of the Switch
supports auto-MDI/MDI-X detection. That means you can directly connect the Switch to
any Ethernet devices without making a crossover cable.
The following table and diagram show the standard RJ-45 receptacle/ connector and their
pin assignments:
RJ-45 Connector pin assignment
Contact MDI Media Dependant
Interface
MDI-X Media Dependant
Interface -Cross
1 TX + (transmit) Rx + (receive)
2 TX - (transmit) Rx - (receive)
3 Rx + (receive) TX + (transmit)
4, 5 Not used
6 Rx - (receive) TX - (transmit)
7, 8 Not used
The standard cable, RJ-45 pin assignment
The standard RJ-45 receptacle/connector