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10/100 Fast Ethernet Switch User’s Guide
RJ-45 Pin Specification
29
RJ-45 Connector pin assignment
Contact Media Direct Interface Signal
1 Tx + (transmit)
2 Tx - (transmit)
3 Rx + (receive)
4 Not used
5 Not used
6 Rx - (receive)
7 Not used
8 Not used
The standard Category 3 cable, RJ-45 pin assignment
The following shows straight cable and crossover cable connection:
Straight cable for Switch (uplink MDI-II port) to switch/Hub or
other devices connection
Crossover cable for Switch (MDI-X port) to switch/hub or other
network devices (MDI-X port) connection