Dell Latitude E5470 Owner's Manual page 46

Option Description
● Enable SMART Reporting
USB This field configures the integrated USB controller. If Boot Support is enabled, the system is allowed to
Configuration 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: This option is enabled by default.
● Enable External USB Port: This option is enabled by default.
USB/Thunderbolt
This is an optional feature.
Configuration
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: This option is enabled by default.
● Enable External USB Port: This option is enabled by default.
● Enable Thunderbolt Port: This option is enabled by default.
● 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
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.
Audio This field enables or disables the integrated audio controller. By default, the Enable Audio option is
selected. The options are:
● Enable Microphone: This option is enabled by default.
● Enable Internal Speaker: This option is enabled by default.
Keyboard This field lets you choose the operating mode of the keyboard illumination feature. The keyboard
Illumination brightness level can be set from 0% to 100%. The options are:
● Disabled
● Dim
● Bright: This option is enabled by default.
Keyboard The Keyboard Backlight with AC option does not affect the main keyboard illumination feature. Keyboard
Backlight with Illumination will continue to support the various illumination levels. This field has an effect when the
AC backlight is enabled.
Keyboard This feature defines the timeout value for the keyboard backlight when AC adapter is plugged into the
Backlight system. The options are:
Timeout on AC
● 5 seconds: This option is enabled by default.
● 10 seconds
● 15 seconds
● 30 seconds
● 1 minute
● 5 minute
● 15 minute
● Never
Keyboard This feature defines the timeout value for the keyboard backlight when system is running only on battery
Backlight power.
Timeout on
● 5 seconds: This option is enabled by default.
Battery
● 10 seconds
46 BIOS setup
NOTE: USB keyboard and mouse always work in the BIOS setup irrespective of these settings.