Compaq NC7131 Gigabit Server Adapter User Guide

Specifications C-5
Figure C-3 shows straight-through Gigabit over copper connector wiring to be used when the
crossover function is implemented within the hub or switch.
1
2
3
4
5
6
7
8
White/Orange
Orange/White
White/Green
Green/White
Blue/White
White/Blue
White/Brown
Brown/White
Figure C-3. Gigabit straight-through wiring for RJ-45 connector
Gigabit over Copper External Crossover Pinouts
When a crossover function is not provided by the adapter or the hub or switch, you must
implement it through the twisted-pair media using the physical pinouts shown in Table C-5.
Table C-5
Gigabit over Copper Crossover Pinouts
Pin Function Color Match Function Pin
1 BI_DA+ White/Orange BI_DB+ 3
2 BI_DA- Orange/White BI_DB- 6
3 BI_DB+ White/Green BI_DA+ 1
4 BI_DC+ Blue/White BI_DD+ 7
5 BI_DC- White/Blue BI_DD- 8
6 BI_DB- Green/White BI_DA- 2
7 BI_DD+ White/Brown BI_DC+ 4
8 BI_DD- Brown/White BI_DC- 5