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C-4 HP NC7770 PCI-X Gigabit Server Adapter User Guide
Gigabit over Copper Internal Straight-
Through Pinouts
Unlike connections in which the crossover function is implemented internally at the hub or
switch, the NC7770 Server Adapter provides its own automatic crossover function. This
means you can wire twisted-pair media straight-through for adapter-to-hub, adapter-to-
switch, or adapter-to-adapter connections using the pinouts shown in Table C-4.
NOTE: To operate at Gigabit speeds, all four pairs of wires must be terminated within the RJ-45
connector.
Table C-4: Gigabit over Copper Pinouts Using Internal Crossover
Pin Function Color Match Function Pin
1 BI_DA+ White/Orange BI_DA+ 1
2 BI_DA- Orange/White BI_DA- 2
3 BI_DB+ White/Green BI_DB+ 3
4 BI_DC+ Blue/White BI_DC+ 4
5 BI_DC- White/Blue BI_DC- 5
6 BI_DB- Green/White BI_DB- 6
7 BI_DD+ White/Brown BI_DD+ 7
8 BI_DD- Brown/White BI_DD- 8
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.
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, hub or switch, you must implement
it through the twisted-pair media using the physical pinouts shown in Table C-5.