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 | MDI-X Media Dependant |
| Interface | 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
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