Dell Latitude L400 - Manual (Page 4)

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Power Management Settings: Dell™ Latitude™ L400 User's Guide
Experimenting With Power Conservation
In general, the lower the value you set for each power conservation feature, the longer the battery's charge lasts. On the other hand, setting high
values tends to optimize the computer's performance.
To evaluate the way that different settings affect how long you can operate the computer on battery power versus the relative efficiency of how the
software performs, experiment as follows:
l Use the computer with all the options set at their default values.
l Use the computer with all the options disabled or set to Off.
l Use the computer with all the options set to their minimum or maximum values.
Using Key Combinations
Table 1 identifies the power management key combinations.
Table 1. Key Combinations
* This key combination does not function under an operating system with the ACPI, such as Microsoft® Windows® 98, Windows 2000, or
Windows Me.
Closing the Display
Experimenting With Power Conservation Suspend-to-Disk Mode for Windows NT
Using Key Combinations Hibernate Mode for Windows 98, Windows 2000, and Windows Me
Closing the Display Power Management Properties for Windows 98
Suspend Mode Power Management Properties for Windows NT
Standby Mode Power Options Properties for Windows 2000 and Windows Me
NOTE: For Advanced Configuration and Power Interface (ACPI) compliant systems, power management settings, such as key
combinations and standby or hibernate mode, are controlled exclusively by the Power Management Properties or Power Options
Properties window in the Control Panel. See
Power Management Properties for Windows 98 and Power Options Properties for Windows
2000 and Windows Me . In other operating systems, power management settings can be controlled from the Power screen in the system
setup program .
NOTE: The key combinations in Table 1 can be used from an external keyboard by enabling the External Hot-Key option on the
Advanced screen in the
system setup program , and then pressing <Scroll Lock> instead of <Fn>.
Feature Activate/Deactivate
Turn off display To activate, press <Fn><F1>.
To deactivate, move the cursor or press a key on the
integrated or external keyboard. (If nothing happens, the
computer may be in
suspend or standby mode. Press
the power button to resume normal operation.)
Suspend (or standby ) mode To activate, press <Fn><Esc>.
To deactivate, press the power button.
Suspend-to-disk mode* To activate, press <Fn><a>. (On a French keyboard,
press <Fn><q>.)
To deactivate, press the power button.
View battery status icon Press <Fn><F3>.