Desktop Boards
Intel® Desktop Board D975XBX
Power Supply Requirements

Failure to use the appropriate power supply and/or not connecting the 12 V (2x4) power connector to the Intel® Desktop Board D975XBX may result in damage to the board or the system may not function properly.

Platform Compatibility Guide Power Supply Requirements
05B 12V2 rating of 16 A continuous and 19 A peak current for 10mS
05A 12V2 rating of 13 A continuous and 16.5 A peak current for 10mS
04B or 04A ATX12V (version 2.0 or greater) compliant Power Supply

Connecting 2x10 Power Supply Cables

The 2x12 main power connector on the desktop board is backwards compatible with ATX12V power supplies with 2x10 power connectors. Use of the 1x4 power connector is required with ATX12V power supplies with 2x10 connectors when using PCI Express cards that can consume up to 75 W. The figure below shows the location of the power connectors for a 2x10 power supply cable.


1. Connect the 12 V processor core voltage power supply cable to the 2x4 connector. Use the 2x2 to 2x4 adapter if needed.
Note Do not use the 2x2 to 2x4 adapter when using an Intel® Pentium® processor Extreme Edition or a processor that is not running at its default settings. Doing so may result in damage to the desktop board.


2. Connect the 1x4 power supply cable to the 1x4 connector.
3. Connect the main 2x10 power supply cable to the 2x12 connector (see figure above).

Connecting 2x12 Power Supply Cables


If you have a 2x12 power supply, follow the instructions below. The figure below shows the location of the power connectors for a 2x12 power supply.




1. Connect the 12 V processor core voltage power supply cable to the 2x4 connector.
Use the 2x2 to 2x4 adapter if needed.

Note Do not use the 2x2 to 2x4 adapter when using an Intel® Pentium® processor Extreme Edition or a processor that is not running at its default settings. Doing so may result in damage to the desktopboard.


2. Connect the main 2x12 power supply cable to the 2x12 connector (see figure above).


For additional details on power supply design specifications, refer to http://www.formfactors.org/ .

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This applies to:

Intel® Desktop Board D975XBX



Solution ID: CS-022070
Last Modified: 01-Oct-2014
Date Created: 15-Dec-2005
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