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Appendix A: Networking Connection
A.1 Switch’s RJ45 Pin Assignments
10/100Mbps, 10/100BASE-TX
RJ45 Connector pin assignment
Contact
MDI
Media Dependent
Interface
MDI-X
Media Dependent
Interface-Cross
PoE
1
Tx + (transmit)
Rx + (receive)
Positive (VCC+)
2
Tx - (transmit)
Rx - (receive)
Positive (VCC+)
3
Rx + (receive)
Tx + (transmit)
Negative (VCC-)
4, 5
Not used
Not used
6
Rx - (receive)
Tx - (transmit)
Negative (VCC-)
7, 8
Not used
Not used
A.2 RJ45 Cable Pin Assignments
The standard RJ45 receptacle/connector