Operating instructions

Alienware Sentia 3450 Technical Reference

Chapter 3: Power Management

Overview

To conserve power, especially when using the battery, your computer uses the ACPI

power management system. Power management conserves power by controlling

in¬dividual components of the computer (the monitor and hard disk drive) or the

whole system.

This chapter covers:

• The Power Sources

• Turning on the Computer

• Power Schemes

• System Power Options

• Conﬁguring the Power Button

• Battery Information

Advanced Conﬁguration and Power Interface

The ACPI interface provides the computer with enhanced power saving techniques

and gives the operating system (OS) direct control over the power and thermal states

of devices and processors. For example, it enables the OS to set devices into low-

power states based on user settings and information from applications. ACPI is fully

supported in Windows XP.

OS Note

Power management functions will vary slightly depending on your operating system.

For more information it is best to refer to the user’s manual of your operating system.

(Note: All pictures used on the following pages are from the Windows XP OS)

Power Button as Stand By or Hibernate Button

If you are using a fully ACPI-compliant OS, (such as Windows XP) you can use the OS’s

“Power Options” control panel to set the power button to send the system into Stand

by or Hibernate mode (see your OS’s documentation, or “Conﬁguring in the Power

Button” on page 3-8 for details)