IBM 865741Y Handbook - Page 237
EIA = Electronics Industries Association
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Note: 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 1 23 Pins 6 RJ-45 Modular Plug Connector The following figure illustrates the wiring in straight-through cables. RJ-45 Modular Connector 10BASE-T / 100 BASE-TX RJ-45 Modular Connector Twisted Signal Pair Name Pin 1 TD+ 1 Signal Pin Name 1 TD+ 1 TD 2 2 TD 2 RD+ 3 3 RD+ 2 RD 6 6 RD 3, 4 (Not used) 4, 5, 7, 8 Relative to the device connected to the adapter 4, 5, 7, 8 (Not used) Appendix A. Ethernet Cable Specifications 219
![](/manual_guide/products/ibm-865741y-handbook-1d257f5/237.png)
Note:
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
Appendix A.
Ethernet Cable Specifications
219