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Fast Ethernet Ports
10/100BASE-TX (RJ-45) Connector Pin Assignments
Figure 3-1 shows the cabling of a 10/100BASE-TX
(RJ-45) port.
Table 3-1 provides the pin assignments for the RJ-45
connectors.
Table 3-1 10/100 BASE-TX (RJ-45) Pin Assignments
10/100 BASE - TX
6x
1x
13x
18x
25x
Pin No.
Signal
Description
1
RX +
Receive +
2
RX –
Receive –
3
TX +
Transmit +
4
Not used
5
Not used
6
12x
7x
19x
Port 7
Male RJ-45 connector
10/100BASE-TX cable
Figure 3-1 Cabling a 10/100BASE-TX (RJ-45) Port
24x
3-3
31x
TX –
Transmit –
7
Not used
8
Not used