Intel DQ33HS, Product Manual

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Desktop Board Features
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+5 V Standby Power Indicator
CAUTION
If the AC power has been switched off and the standby power indicator is still lit,
disconnect the power cord before installing or removing any devices connected to the
board. Failure to do so could damage the board and any attached devices.
The Desktop Board’s standby power indicator (green LED), shown in Figure 3, is lit
when there is standby power still present on the board even when the computer
appears to be off. For example, when this indicator is lit, standby power is still
present at the memory module sockets and the PCI bus connectors.
Figure 3. Standby Power Indicator
Wake from USB
NOTE
Wake from USB requires the use of a USB peripheral that supports Wake from USB.
USB bus activity wakes the computer from an ACPI S1 or S3 state.
PME# Signal Wake-up Support
When the PME# signal on the PCI bus is asserted, the computer wakes from an
ACPI S1, S3, S4, or S5 state.
WAKE# Signal Wake-up Support
When the WAKE# signal on the PCI Express bus is asserted, the computer wakes from
an ACPI S1, S3, S4, or S5 state.