Intel D845EPT2, D845EBG2 manual http//developer.intel.com/design/motherbd

Intel Desktop Boards D845EPT2 and D845EBG2 Product Guide

Instantly Available PC technology enables the board to enter the ACPI S3 (Suspend-to-RAM) sleep state. While in the S3 sleep state, the computer will appear to be off. When signaled by a wake-up device or event, the system quickly returns to its last known awake state.

The Intel desktop board’s standby power indicator, shown in Figure 3, is lit when there is standby power to the system. This includes the memory modules and PCI bus connectors, even when the computer appears to be off.

If the system has a dual-colored power LED on the front panel, the sleep state is indicated by the LED turning amber.

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Figure 3. Location of Standby Power Indicator

CAUTION

Power supplies used with this board must be able to provide enough standby current to support the standard Instantly Available (ACPI S3 sleep state) configuration. If the standby current necessary to support multiple wake events from the PCI and/or USB buses exceeds power supply capacity, the Intel desktop board may lose register settings stored in memory.

For more information on standby current requirements for these desktop boards, refer to the TPS by selecting the Technical Documentation link at:

http://developer.intel.com/design/motherbd/

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