Planet Technology SW-501 manual Appendix a RJ-45 PIN Specification, RJ-45 Connector pin assignment

Appendix A RJ-45 PIN Specification

When connecting your 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 recepta- cle/ connector and their pin assignments:

	RJ-45 Connector pin assignment
	MDI		MDI-X
Contact		Media Dependant Interface
	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

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