Dell Latitude 5590 Owner's Manual page 84

Option Description
Keyboard This field lets you choose the operating mode of the keyboard illumination feature. The keyboard brightness level
Illumination can be set from 0% to 100%. The options are:
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Keyboard Backlight The Keyboard Backlight Timeout dims out with AC option. The main keyboard illumination feature is not affected.
Timeout on AC Keyboard Illumination will continue to support the various illumination levels. This field has an effect when the
backlight is enabled.
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Keyboard Backlight The Keyboard Backlight Timeout dims out with Battery option. The main keyboard illumination feature is not
Timeout on Battery affected. Keyboard Illumination will continue to support the various illumination levels. This field has an effect when
the backlight is enabled.
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Keyboard Backlight The Keyboard Backlight with AC option does not affect the main keyboard illumination feature. Keyboard
with AC Illumination will continue to support the various illumination levels. This field has an effect when the backlight is
enabled.
Touchscreen This fields controls whether the touchscreen is enabled or diabled.
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Unobtrusive Mode This option, when enabled, pressing Fn+F7 turns off all light and sound emissions in the system. To resume normal
operation, press Fn+F7 again. This option is disabled by default.
Miscellaneous Allows you to enable or disable the following devices:
Devices
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84 System setup options
Disabled
Dim
Bright (enabled by default)
5 seconds
10 seconds (enabled by default)
15 seconds
30 seconds
1 minute
5 minutes
15 minutes
Never
5 seconds
10 seconds (enabled by default)
15 seconds
30 seconds
1 minute
5 minutes
15 minutes
Never
Touchscreen (enabled by default)
Enable Camera —enabled by default
Enable Hard Drive Free Fall Protection (enabled by default)
Enable Secure Digital (SD) Card (enabled by default)
Secure Digital (SD) Card Boot
Secure Digital (SD) Card Read — only Mode