2 Operating on battery power
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Power management
This computer has a built-in power manageme nt unit that moni tors system acti vity.
System activity refers to any activity involving one or more of the following
devices: keyboard, mouse, floppy drive, hard disk, peripherals connected to the
serial and parallel ports, and vide o memory. If no activity is detected for a pe riod
of time (called an in activity timeout), th e computer stops som e or all of these
devices in order to conserve energy.
This computer employs a power management scheme that supports ACPI
(Advanced Configuration and Power Interface) which allows for maximum power
conservation and maximum performance at the same time. Windows handles all
power-saving chores for your computer.

Advanced Configuration and Power Interface

Advanced Configuration and Power Interface (ACPI) is a power management
specification jointly developed by Intel, Microsoft, and Toshiba. ACPI enabl es
Windows to control the amount of power given to each device attached to the
computer. With ACPI , Windows can turn off peripheral devices when they are not
in use, thereby saving power.
Note: We recommend you enable power manageme nt to pr olon g your ba ttery
life.

Power management modes

Sleep mode (ACPI)

If ACPI is installed, all power management functions are handled by the Windows
operating system.
Sleep mode may be one of three computer power-saving modes: Standby,
Hibernation or power off.
To enter Sleep mode under ACPI:
• Press the Sleep hotkey Fn-F4
• Allow the idle times for devic es and the co mp uter det erm ine d by W indow s 98
to elapse