Appendix A Networking Connection

A.1 Switch‘s RJ-45 Pin Assignments

10/100Mbps, 10/100Base-TXRJ-45 Connector pin assignment

Contact

MDI

 

MDI-X

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

 

 

 

 

A.2 RJ-45 cable Pin Assignments

The standard RJ-45 receptacle/connector

There are 8 wires on a standard UTP/STP cable and each wire is color-coded. The following shows the pin allocation and color of straight cable and crossover cable connection:

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