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Appendix A - 10/100Mbps, 10/100BASE-TX
When connecting the Switch to another Fast Ethernet switch, a straight-through or
crossover cable might be necessary. Each port of the Switch supports auto-MDI/
MDI-X detection, meaning you can directly connect the Switch to any Ethernet
devices without making a crossover cable. The following table and diagram show
the standard RJ45 receptacle/connector and their pin assignments:
RJ45 Connector Pin Assignment
Contact
MDI
Media Dependent Interface
MDI-X
Media Dependent 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, RJ45 pin assignment
The standard RJ45 receptacle/connector
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