Option Description
If USB port is disabled, the OS cannot see any device attached to this port.
The options are:
● Enable USB Boot Support (by default enable)
● Enable External USB Port (by default enable)
● Enable Thunderbolt Port (by default enable).
● Enable Thunderbolt Boot Support. This is an optional feature.
● Always Allows Dell Docks. This is an optional feature.
● Enables Thunderbolt (and PCIe behind TBT) Pre-boot
NOTE: USB keyboard and mouse always work in the BIOS setup irrespective of these settings.
USB PowerShare 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. By default, the
Enable USB PowerShare is disabled.
Audio This field enables or disables the integrated audio controller. By default, the Enable Audio option is
selected. The options are:
● Enable Microphone (by default enabled)
● Enable Internal Speaker (by default enabled)
Keyboard
Illumination
This field lets you choose the operating mode of the keyboard illumination feature. The keyboard
brightness level can be set from 0% to 100%. The options are:
● Disabled
● Dim
● Bright (enabled by default)
Keyboard
Backlight
Timeout on AC
This feature defines the time-out value for the keyboard backlight when an AC adapter is plugged into
the system. The main keyboard illumination feature is not affected. Keyboard Illumination will continue to
support the various illumination levels. This field has an effect when the backlight is enabled. Options are:
● 5 seconds
● 10 seconds — this option is selected by default
● 15 seconds
● 30 seconds
● 1 minute
● 5 minute
● 15 minute
●
never
Keyboard
Backlight Time-
out on Battery
The Keyboard Backlight Time-out dims out with Battery option. The main keyboard illumination feature is
not affected. Keyboard Illumination will continue to support the various illumination levels. This field has
an effect when the backlight is enabled. Options are:
● 5 seconds
● 10 seconds — this option is selected by default
● 15 seconds
● 30 seconds
● 1 minute
● 5 minute
● 15 minute
●
never
Miscellaneous
Devices
Allows you to enable or disable various on board devices:
● Enable Camera —enabled by default
● Enable Secure Digital(SD) Card
● Secure Digital(SD) Card read only mode
System setup options 67
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