Dell Latitude 7490 Owner's Manual page 67

Option Description
This field configures the integrated USB controller. If Boot Support is enabled, the system is allowed to
boot any type of USB Mass Storage Devices—HDD, memory key, floppy.
If USB port is enabled, device attached to this port is enabled and available for OS.
If USB port is disabled, the OS cannot see any device attached to this port.
The options are:
● Enable USB Boot Support—enabled by default
● Enable External USB Port—enabled by default
Always Allow Dell Docs.This option is enabled by default.
Dell Type-C Dock
Configuration
● Enable Thunderbolt Technology Support.This option is enabled by default.
Thunderbolt
● Enable Thunderbolt Adaptor Boot Support
Adaptor
Configuration
● Enable Thunderbolt Adaptor Pre-boot Modules
● Security level—No Security
● Security level—User Authorization.This option is enabled by default.
● Security level—Secure Connect
● Security level—Display Port Only
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. This option is disabled
by default
This field enables or disables the integrated audio controller. By default, the Enable Audio option is
Audio
selected. The options are:
● Enable Microphone—by default enable
● Enable Internal Speaker—by default enable
This field lets you choose the operating mode of the keyboard illumination feature. The keyboard
Keyboard
brightness level can be set from 0% to 100%. The options are:
Illumination
● Disabled
● Dim
● Bright—enabled by default
The Keyboard Backlight with AC option does not affect the main keyboard illumination feature. Keyboard
Keyboard
Illumination will continue to support the various illumination levels. This field has an effect when the
Backlight with
backlight is enabled. This option is enabled by default.
AC
The Keyboard Backlight Timeout dims out with AC option. The main keyboard illumination feature is not
Keyboard
affected. Keyboard Illumination will continue to support the various illumination levels. This field has an
Backlight
effect when the backlight is enabled. The options are:
Timeout on AC
● 5 sec
● 10 sec—enabled by default
● 15 sec
● 30 sec
● 1 min
● 5 min
● 15 min
● Never
The Keyboard Backlight Timeout dims out with the Battery option. The main keyboard illumination feature
Keyboard
is not affected. Keyboard Illumination will continue to support the various illumination levels. This field has
Backlight
an effect when the backlight is enabled. The options are:
Timeout on
● 5 sec
Battery
● 10 sec—enabled by default
● 15 sec
● 30 sec
● 1 min
USB keyboard and mouse always work in the BIOS setup irrespective of these settings.
NOTE:
System setup 67