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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
location.
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
1
Ground
3
Ground
5
Ground
7
Ground
50
Pin
Signal Name
2
+12 V
4
+12 V
6
+12 V
8
+12 V
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