ST 500 "Piranha" Operation Manual: Supplement #3 - Reference Information
85
12.3.1. EIA/TIA-568A WIRING SCHEME
1
st
connector #
Color of wire
2
nd
connector #
1
white and green (TX+)
1
2
green (TX-)
2
3
white and orange (RX+)
3
4
blue
4
5
white and blue
5
6
orange (RX-)
6
7
white and brown
7
8
brown
8
12.3.2. WIRING SCHEME EIA/TIA-568B
1
st
connector #
Color of wire
2
nd
connector #
1
white and orange (TX+)
1
2
orange (TX-)
2
3
white and green (RX+)
3
4
blue
4
5
white and blue
5
6
green (RX-)
6
7
white and brown
7
8
brown
8
12.4. CROSSOVER WIRING SCHEME
The wiring scheme of a cable linking two network interface cards is different in that the green
and orange pairs have their places swapped at one end of the cable, one of the connectors being
586A, and the other 586B. This is called a
"
crossover
"
, or
"
null-hub
"
cable. The same scheme is
used for cascading (connecting) hubs.
1
st
connector #
Color of wire
2
nd
connector #
1
white and green (TX+)
3
2
green (TX-)
6
3
white and orange (RX+)
1
4
blue
4
5
white and blue
5
6
orange (RX-)
2
7
white and brown
7
8
brown
8