Dell Latitude 5420 Rugged Manuel de configuration et de spécifications - Page 26
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Option
USB Configuration
USB PowerShare
Audio
Keyboard Illumination
Keyboard Backlight Timeout on AC
Keyboard Backlight Timeout on Battery
26
System setup
Description
Allows you to enable or disable the internal/integrated USB
configuration.
The options are:
•
Enable USB Boot Support
•
Enable External USB Ports
•
Disable Docking Station Devices except video (Default :
Unchecked)
Rest all the options are set by default.
NOTE:
USB keyboard and mouse always work in the BIOS
setup irrespective of these settings.
This field configures the USB PowerShare feature behavior. This
option allows you to charge external devices using the stored
system battery power through the USB PowerShare port (disabled
by default).
•
Enable USB PowerShare
Allows you to enable or disable the integrated audio controller. By
default, the Enable Audio option is selected.
The options are:
•
Enable Microphone
•
Enable Internal Speaker
This option is set by default.
This option lets you choose the operating mode of the keyboard
illumination feature
The options are:
•
Disabled
•
25%
•
50%
•
75%
•
100%
Allows to define the timeout value for the keyboard backlight when
an AC adapter is plugged in the system. The Keyboard Backlight
tiemout value is only in effect when the backlight is enabled.
•
5 seconds
•
10 seconds—Default
•
15 seconds
•
30 seconds
•
1 minute
•
5 minutes
•
15 minutes
•
Never
Allows to define the timeout value for the keyboard backlight when
the system is running only on battery power. The Keyboard