CABLES
Figure B-1 illustrates how the pins on the RJ-45 connector are numbered. Be sure to hold the connectors in the same orientation when attaching the wires to the pins.
Figure B-1. RJ-45 Connector Pin Numbers
Straight-through Cable
End 1 | End 2 | ||
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1 | (TD+) | 1 | (TD+) |
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2 | 2 | ||
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3 | (RD+) | 3 | (RD+) |
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6 | 6 |
Pins 4, 5, 7 and 8 are not connected.
Crossover Cable
Crossover
End 1 | End 2 | ||
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1 | (TD+) | 3 | (RD+) |
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2 | 6 | ||
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3 | (RD+) | 1 | (TD+) |
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6 | 2 |
Pins 4, 5, 7 and 8 are not connected.