24
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