Intel Desktop Board DX48BT2 Technical Product Specification

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 4 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.

• Auxiliary PCI Express graphics power – a 1 x 4 connector. This connector

provides the required additional power when using high power (75 W or greater)

add-in cards in either or both the Secondary PCI Express x16 (electrical x8) and

the PCI Express x16 (electrical x4) bus add-in card connectors. See Figure 1 for

locat

on.

CAUTION

If high power (75 W or greater) add-in cards are installed in either or both the

Secondary PCI Express x16 (electrical x8) and the PCI Express x16 (electrical x4) bus

add-in card connectors, the Auxiliary PCI Express graphics power connector must be

used. Failure to do so may cause damage to the board and the add-in cards.

Furthermore, if you use a 2 X 10 power cable, you must also use the Auxiliary PCI

Express graphics power connector to ensure stable board operation.

Table 17. Processor Core Power Connector

Pin Signal Name Pin Signal Name

1 Ground 2 +12 V

3 Ground 4 +12 V

5 Ground 6 +12 V

7 Ground 8 +12 V