Acpi Configuration - ASROCK Q1900B-ITX User Manual

4.3.6 ACPI Configuration

Suspend to RAM
Select disable for ACPI suspend type S1. It is recommended to select auto for ACPI
S3 power saving.
ACPI HPET Table
Enable the High Precision Event Timer for better performance and to pass WHQL
tests.
PS/2 Keyboard Power On
Allow the system to be waked up by a PS/2 Keyboard.
PCIE Device Power On
Allow the system to be waked up by a PCIE device and enable wake on LAN.
Ring-In Power On
Allow the system to be waked up by onboard COM port modem Ring-In signals.
RTC Alarm Power On
Allow the system to be waked up by the real time clock alarm. Set it to By OS to let
it be handled by your operating system.
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