HP Tc4400 Power - Page 38

Conserving battery power, Conserving power as you work

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Battery packs Conserving battery power Using the battery conservation procedures and settings described in this section extends the time that a battery pack can run the computer from a single charge. Conserving power as you work To conserve power as you use the computer: ■ Turn off wireless, and local area network (LAN) connections, and exit modem software when you are not using it. ■ Disconnect external devices you are not using that are not plugged into an external power source. ■ Stop, disable, or remove any external media cards you are not using. ■ Use the fn+f9 and fn+f10 hotkeys to adjust screen brightness as you need it. ■ Use the fn+f11 hotkeys to enable the Ambient Light Sensor, which automatically adjusts screen brightness with regard to the surrounding ambient light conditions. ■ Use optional powered speakers instead of the internal speakers, or adjust system volume as you need it. ■ Press fn+f4 to switch the screen image from the computer display to an external display device. ■ If you leave your work, initiate standby or hibernation, or shut down the computer. Power 7-15

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Battery packs
Power
7–15
Conserving battery power
Using the battery conservation procedures and settings described
in this section extends the time that a battery pack can run the
computer from a single charge.
Conserving power as you work
To conserve power as you use the computer:
■
Turn off wireless, and local area network (LAN) connections,
and exit modem software when you are not using it.
■
Disconnect external devices you are not using that are not
plugged into an external power source.
■
Stop, disable, or remove any external media cards you are not
using.
■
Use the
fn+f9
and
fn+f10
hotkeys to adjust screen brightness
as you need it.
■
Use the
fn+f11
hotkeys to enable the Ambient Light Sensor,
which automatically adjusts screen brightness with regard to
the surrounding ambient light conditions.
■
Use optional powered speakers instead of the internal
speakers, or adjust system volume as you need it.
■
Press
fn+f4
to switch the screen image from the computer
display to an external display device.
■
If you leave your work, initiate standby or hibernation, or
shut down the computer.