Compaq 3134 manual 10/100 Crossover Pinouts, Gigabit over Copper Internal Straight-Through Pinouts

C-6Compaq NC3134 Fast Ethernet Server Adapter User Guide

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-10.

Table C-10

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).

Figure C-2. External crossover for RJ-45 connector

Gigabit over Copper Internal Straight-Through Pinouts

Unlike some connections in which the crossover function is implemented internally at the hub or switch, the NC7132 upgrade module provides its own automatic cross-over function. This means you can wire twisted-pair media straight-through for adapter-to-hub or switch or adapter- to-adapter connections, using the pinouts shown in Table C-11.

NOTE: To operate at Gigabit speeds, all four pairs of wires must be terminated within the RJ-45 connector.