DG45FC datasheet(49/88 Pages) INTEL

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Technical Reference

2.2.2.4

Power Supply Connectors

The board has the following power supply connectors:

•

Main power – a 2 x 12 connector. This connector is compatible with 2 x 10

connectors previously used on Intel Desktop boards. The board supports the use

of ATX12V power supplies with either 2 x 10 or 2 x 12 main power cables. When

using a power supply with a 2 x 10 main power cable, attach that cable on the

rightmost pins of the main power connector, leaving pins 11, 12, 23, and 24

unconnected.

•

Processor core power – a 2 x 2 connector. This connector provides power

directly to the processor voltage regulator and must always be used. Failure to do

so will prevent the board from booting.

Table 20. Processor Core Power Connector

Signal Name

Ground

+12 V

Table 21. Main Power Connector

Signal Name

+3.3 V

-12 V

Ground

+5 V

PS-ON# (power supply remote on/off)

Ground

+5 V

Ground

PWRGD (Power Good)

No connect

+5 V (Standby)

+5 V

+12 V

+5 V

+12 V (Note)

+5 V (Note)

2 x 12 connector detect (Note)

Ground (Note)

Note: When using a 2 x 10 power supply cable, this pin will be unconnected.

For information about

Refer to

Power supply considerations

Section 2.5.1, page 56

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