Power Management Setup
ACPI function [Enable] by Default
ACPI stands for “Advanced Configuration and Power Interface”. ACPI is a standard that defines power
and configuration management interfaces between an operating system and the BIOS. In other words, it
is a standard that describes how computer components work together to manage system hardware. In
order to use this function the ACPI specification must be supported by the OS (for example, Win-
dows2000 or WindowsXP).
ACPI Suspend Type [S1&S3] by Default
This option is used to set the energy saving mode of the ACPI function. When you select “S1 (POS)”
mode, the power will not shut off and the supply status will remain as it is, in S1 mode the computer can
be resumed at any time. When you select “S3 (STR)” mode, the power will be cut off after a delay pe-
riod. The status of the computer before it enters STR will be saved in memory, and the computer can
quickly return to previous status when the STR function wakes. When you select “S1 & S3” mode, the
system will automatically select the delay time.
C States Support [Disable] by Default
CPU power state selection.
Soft-Off by PBTN [Instant-Off] by Default
This option is used to set the power down method. This function is only valid for system using an ATX
power supply. When “Instant-Off” is selected, press the power switch to immediately turn off power.
When “Delay 4 Sec” is selected, press and hold the power button for four seconds to turn off power.
Power Management Setup Menu
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Chapter 3: BIOS Setup
Summary of Contents for MCP55
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