Intel Desktop Board DG31PR Technical Product Specification

2.2.2.3 Auxiliary Front Panel Power/Sleep LED Header

Pins 1 and 3 of this header duplicate the signals on pins 2 and 4 of the front panel

header.

Table 17. Auxiliary Front Panel Power/Sleep LED Header

Pin Signal Name In/Out Description

1 HDR_BLNK_GRN Out Front panel green LED

2 Not connected

3 HDR_BLNK_YEL Out Front panel yellow LED

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 18. Processor Core Power Connector

Pin Signal Name Pin Signal Name

1 Ground 2 Ground

3 +12 V 4 +12 V