Dell Latitude E5550 Owner's Manual page 46

Option
USB PowerShare
Audio
Keyboard Illumination
Keyboard Backlight with AC
Unobtrusive Mode
Miscellaneous Devices
46
Description
If USB port is disabled, the OS cannot see any device attached to this
port.
• Enable Boot Support
• Enable External USB Port
• Enable USB3.0 Controller
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.
This field enables or disables the integrated audio controller. By default,
the Enable Audio option is selected.
This field lets you choose the operating mode of the keyboard
illumination feature.
The keyboard brightness level can be set from 0% to 100%
• Disabled
• Dim
• Bright
This option is disabled by default.
The Keyboard Backlight with AC option does not affect the main
keyboard illumination feature. Keyboard Illumination will continue to
support the various illumination levels. This field has an effect when the
backlight is enabled.
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.
Allows you to enable or disable the following devices:
• Enable Microphone
• Enable Camera
• Enable Hard Drive Free Fall Protection
• Enable Media Card
• Disable Media Card
NOTE: All devices are enabled by default.
You can also enable or disable Media Card.