Intel D845GRG Using Manual page 40

Technical Product Specification for Intel Desktop Boards using the Intel 845G Chipset
1.13.2.7 Wake from USB
USB bus activity wakes the computer from ACPI S1 or S3 states.
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NOTE
Wake from USB requires the use of a USB peripheral that supports Wake from USB.
1.13.2.8 Wake from PS/2 Devices
PS/2 device activity wakes the computer from ACPI S1 or S3 states.
1.13.2.9 PME# Signal Wake-up Support
When the PME# signal on the PCI bus is asserted, the computer wakes from ACPI S1, S3, S4, or
S5 states (with Wake on PME enabled in BIOS).
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