BIOS Overview

Power Management and Wake Up Events

You can reduce the PC’s overall power consumption by using Power Management to slow down the PC’s activity when it is idle.

ACPI Power Management Modes

(Windows 98, Windows 2000 and Windows XP)

Idle (s1):

The processor is shutdown.

Standby (s3):

All components of the system are shut down except for the system memory which remains active. This management mode is also known as “Suspend to RAM”.

Hibernation (s4):

System memory is copied to the hard disk. All components of the system are shut down. This management mode is also known as “Suspend to Disk”.

Off (s5):

All components of the system are shut down.

The following table lists the possible Wake Up Events for the different power management modes, activity on any one of these events will cause the system to wake up from it’s current power state:

 

Wake Up Event

 

 

 

 

Power State

Windows 98

 

Windows 2000/XP

 

 

 

s1 (Idle)

RTC (Real Time Clock)

s3 (Standby/Suspend to RAM)

 

LAN

RI# (Ring Indicator)

 

 

 

USB

 

 

PS/2 Keyboard

 

 

Power Button

 

 

 

 

s4 (Hibernation/Suspend to Disk)

Not Applicable

 

RTC (Real Time Clock)

 

 

 

LAN

 

 

 

RI# (Ring Indicator)

 

 

 

USB

 

 

 

Power Button

 

 

 

 

s5 (Off)

Power Button

 

LAN

 

 

 

Power Button

 

 

 

 

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Compaq D310 manual Power Management and Wake Up Events