10/100 Fast Ethernet Switch User’s Guide
RJ-45 Pin Specification
73
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
Table B-1. The standard Category 3 cable, RJ-45 pin
assignment
The following shows straight cable and crossover cable connection:
Figure B-2. Straight cable for Switch (uplink MDI-II port) to
switch/Hub or other devices connection
Figure B-3. Crossover cable for Switch (MDI-X port) to
switch/hub or other network devices (MDI-X port) connection