Intel D945GCLF2 - Manual (Page 35)

Product Description
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1.13.2.5 Wake from USB
USB bus activity wakes the computer from ACPI S1 and S3 state.
NOTE
Wake from USB requires the use of a USB peripheral that supports Wake from USB
and support in the OS.
1.13.2.6 Wake from PS/2 Devices
PS/2 device activity wakes the computer from an ACPI S1, S3, S4, or S5 state.
However, when the computer is in an S4 or S5 state, the only PS/2 activity that will
wake the computer is the alt-PrtScrn key combination on the keyboard.
1.13.2.7 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 (with Wake on PME enabled in BIOS).
1.13.2.8 +5 V Standby Power Indicator LED
The +5 V standby power indicator LED shows that power is still present even when the
computer appears to be off. Figure 6 shows the location of the standby power
indicator LED.
CAUTION
If 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.