Product Description
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1.11.1.2 Wake-up Devices and Events
Table 8 lists the devices or specific events that can wake the computer from specific
states.
Table 8. Wake-up Devices and Events
These devices/events can wake up the computer…
LAN S1, S3, S4, S5
PME# signal S1, S3, S4, S5
Wake# signal S1, S3, S4, S5
Power switch S1, S3, S4, S5
RTC alarm S4, S5
Serial port S1, S3
USB S1, S3
PS/2 devices S1, S3, S4, S5
Notes:
1. S4 implies operating system support only. Wake from S5 must include wake after loss of power.
2. USB ports are turned off during S4/S5 states.
3. Wake# signal must be controllable by the BIOS (enable/disable option).
4. PS/2 wake from S5 should have a selection in the BIOS to enable wake from a combination key
(Alt + Print Screen) or the keyboard power button.
NOTE
The use of these wake-up events from an ACPI state requires an operating system that
provides full ACPI support. In addition, software, drivers, and peripherals must fully
support ACPI wake events.