
Notes
AWG = American Wire Gauge
EIA = Electronics Industries Association
STP = shielded twisted pair
TIA = Telecommunications Industries Association
The following figure illustrates the RJ-45 connector.
10BASE-T or 100 BASE-TX
UTP Cable
RJ-45 Modular Plug Connector
1
2
3
Pins
6
The following figure illustrates the wiring in straight-through
cables.
Twisted
Pair
1
2
3
6
4, 5, 7, 8
RJ-45 Modular Connector
Pin
1
1
2
2
3, 4
10BASE-T / 100 BASE-TX
1
2
3
6
4, 5, 7, 8
Pin
TD+
TD
RD+
RD
RJ-45 Modular Connector
(Not used)
TD+
TD
RD+
RD
(Not used)
Signal
Name
Signal
Name
Relative to the device connected to the adapter
The following figure illustrates the wiring in crossover
cables.
Twisted
Pair
1
2
3
6
4, 5, 7, 8
RJ-45 Modular Connector
Pin
1
1
2
2
3, 4
10BASE-T / 100BASE-TX
1
2
3
6
4, 5, 7, 8
Pin
TD+
TD
RD+
RD
RJ-45 Modular Connector
(Not used)
TD+
TD
RD+
RD
(Not used)
Signal
Name
Signal
Name
Relative to the device connected to the adapter
Note
For additional information about Ethernet protocols,
refer to your Ethernet documentation.
IBM Netfinity 3500 - Type 8644 33
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