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New design specifications for power supplies have been developed to support Intel® Desktop Boards.
| Old |
New |
| ATX12V ver 1.3 |
ATX12V ver 2.0 |
| SFX12V ver 2.3 |
SFX12V ver 3.0 |
| TFX12V ver 1.2 |
TFX12V ver 2.0 | | Major changes include:
- 2x10 (20-pin) main power connector is now 2x12 (24-pin) supporting both 2x10 and 2x12 power cables
- Serial ATA (SATA) connectors are now required to support SATA hard drives.
- Additional 1x4 power connector to provide additional 12-volt power
Connecting 2x10 Power Supply Cables
The 2x12 main power connector on the desktop board is backwards compatible with ATX12V power supplies with 2x10 power connections. Use of the 1x4 power connection is recommended with ATX12V power supplies with 2x10 connections when using PCI Express video cards that can consume up to 75 W. The figure below shows the location of the power connectors for a 2x10 power supply cable.
- Connect the 1x4 power supply cable to the 1x4 connector.
- Connect the 12 V processor core voltage power supply cable to the 2x2 connector.
- Connect the main power supply cable to the 2x10 connector.
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.
- Connect the 12 V processor core voltage power supply cable to the 2x2 connector.
- Connect the main power supply cable to the 2x12.
For additional details on power supply design specifications, refer to http://www.formfactors.org/*.
This applies to:
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