HP NC3120 Table C-3, 10/100 Pinouts Using External Crossover, C-3, 10/100 Crossover Pinouts

Specifications C-3

Figure C-1 shows the straight-through 10/100 connector wiring to be used when the crossover function is implemented on the hub or switch.

Figure C-1. 10/100 straight-through wiring for RJ-45 connector

10/100 Crossover Pinouts

When the crossover function is not provided within the hub or switch, you must implement the crossover through the twisted-pair media using the physical pinouts indicated in Table C-3.

Table C-3

10/100 Pinouts Using External Crossover

Pin	Function	Color Match	Function	Pin
1	TD+	White/Orange	RD+	3
2	TD-	Orange/White	RD-	6
3	RD+	White/Green	TD+	1
4		Blue/White
5		White/Blue
6	RD-	Green/White	TD-	2
7		White/Brown
8		Brown/White

Figure C-2 shows the correct 10/100 wiring to use when the crossover function is implemented externally in the twisted-pair cabling.

1			White/Orange
	2		Orange/White
		3	White/Green
		4
		5	Green/White
		6
	7
	8

Figure C-2. 10/100 external crossover for RJ-45 connector