Dell Latitude D510 - Manual (Page 65)

Standby mode conserves power by turning off the display and the hard drive after a predetermined period of inactivity (a time-out). When the computer exits
standby mode, it returns to the same operating state it was in before entering standby mode.
To enter standby mode, press <Fn><Esc> or click the Start button, click Turn off computer, and then click Stand by.
To exit standby mode, press the power button or open the display depending on how you set the options on the Advanced tab . You cannot make the
computer exit standby mode by pressing a key or touching the touch pad.
Hibernate Mode
Hibernate mode conserves power by copying system data to a reserved area on the hard drive and then completely turning off the computer. When the
computer exits hibernate mode, it returns to the same operating state it was in before entering hibernate mode.
Your computer enters hibernate mode if the battery charge level becomes critically low.
To manually enter hibernate mode:
l Press <Fn><F1>.
or
l Click the Start button, click Turn off computer, press and hold <Shift>, and then click Hibernate.
To exit hibernate mode, press the power button. The computer may take a short time to exit hibernate mode. You cannot make the computer exit hibernate
mode by pressing a key or touching the touch pad. For more information on hibernate mode, see the documentation that came with your operating system.
Power Options Properties
The Power Options Properties window helps you to manage power consumption and monitor battery charge status. To access the Windows Power Options
Properties window, click the Start button® Control Panel® Performance and Maintenance® Power Options.
Power Schemes Tab
The Power schemes drop-down menu displays the selected preset power scheme. Keep the default Portable/Laptop power scheme to maximize battery
power.
Windows XP controls the performance level of the processor depending on the power scheme you select. You do not need to make any further adjustments to
set the performance level. For information on setting processor performance for other operating systems, see "
Intel SpeedStep® Technology Tab ."
Each preset power scheme has different time-out settings for entering standby mode, turning off the display, and turning off the hard drive. For more
NOTICE: If your computer loses AC and battery power while in standby mode, it may lose data.
NOTICE: You cannot remove devices or undock your computer while your computer is in hibernate mode.
NOTE: Some PC Cards may not operate correctly after the computer exits hibernate mode. Remove and reinsert the card, or simply restart (reboot) your
computer.
information on power management options, see the Windows Help and Support Center .
Alarms Tab
The Low battery alarm and Critical battery alarm settings alert you with a message when the battery charge falls below a certain percentage. When you
receive your computer, the Low battery alarm and Critical battery alarm check boxes are selected. It is recommended that you continue to use these
settings. See "
Using a Battery " for more information on low-battery warnings.
Power Meter Tab
NOTE: To enable audible alarms, click each Alarm Action button and select Sound alarm.