Intel 140T Guia De Inicio Rapido página 11

However, if the LEDs remain off, you probably have a bad cable.
If a cable passes either of these tests, but the network connection is
slow, verify that wires 1 & 2 and 3 & 6 on the cable are twisted pairs. Refer
to the following diagrams.
Straight-through UTP cable
Hub (MDI-X)
10 / 100
1 (RX+)
2 (RX-)
3 (TX+)
6 (TX-)
4 Not used
5 Not used
7 Not used
8 Not used
Crossover UTP cable
Hub (MDI-X)
10 / 100
1 (RX+)
2 (RX-)
3 (TX+)
6 (TX-)
4 Not used
5 Not used
7 Not used
8 Not used
Adapter (MDI)
1 (TX+)
2 (TX-)
3 (RX+)
6 (RX-)
4 Not used
5 Not used
7 Not used
8 Not used
Switch (MDI-X)
1 (RX+)
2 (RX-)
3 (TX+)
6 (TX-)
4 Not used
5 Not used
7 Not used
8 Not used
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