Dell Latitude 7400 2-in-1 Setup and specifications guide - Page 27

Table 30. System Configuration continued, Enable Thunderbolt and PCIe behind TBT Pre-boot - microphone not working

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Table 30. System Configuration (continued) Option Dell Type-C Dock Configuration Thunderbolt™ Adapter Configuration Thunderbolt™ Auto Switch USB PowerShare Audio Keyboard Illumination Description NOTE: USB keyboard and mouse always work in the BIOS setup irrespective of these settings. Allows you to connect to Dell WD and TB family of docks(Type-C Docks) independent of USB and thunderbolt adapter configuration. This option is enabled by default. Allows you to enable or disable Thunderbolt options: ● Thunderbolt (Enabled by Defualt) ● Enable Thunderbolt Boot Support ● Enable Thunderbolt (and PCIe behind TBT) Pre-boot With following security levels : ● No Security ● User Authentication (Enabled by Defualt) ● Secure Connect ● Display Port and USB Only This option configures the method used by the Thunderbolt controller to perform PCIe device enumeration. ● Auto Switch : The BIOS will automatically switch between BIOS Assist and Native Thunderbolt PC device enumeration modes to get all benefits of the installed OS ● Native Enumeration: The BIOS will program the Thunderbolt controller to Native mode ( Auto Switching is disabled) ● BIOS Assist Enumeration: The BIOS will program the Thunderbolt controller to BIOS Assist mode ( Auto Switching is disabled) NOTE: A reboot is required for these changes to take effect. This option enable/disable the USB PowerShare feature behavior. This option is disabled by default. Allows you to enable or disable the integrated audio controller. By default, the Enable Audio option is selected. The options are: ● Enable Microphone ● Enable Internal Speaker This option is set by default. This field lets you choose the operating mode of the keyboard illumination feature. ● Disabled: The Keyboard illumination will always be off or 0%. ● Dim: Enable the keyboard illumination feature at 50% brightness. ● Bright: Enable the keyboard illumination feature at 100% brightness level. System setup 27

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Table 30. System Configuration (continued)
Option
Description
NOTE:
USB keyboard and mouse always work in the BIOS
setup irrespective of these settings.
Dell Type-C Dock Configuration
Allows you to connect to Dell WD and TB family of
docks(Type-C Docks) independent of USB and thunderbolt
adapter configuration.
This option is enabled by default.
Thunderbolt™ Adapter Configuration
Allows you to enable or disable Thunderbolt options:
●
Thunderbolt (Enabled by Defualt)
●
Enable Thunderbolt Boot Support
●
Enable Thunderbolt (and PCIe behind TBT) Pre-boot
With following security levels :
●
No Security
●
User Authentication (Enabled by Defualt)
●
Secure Connect
●
Display Port and USB Only
Thunderbolt™ Auto Switch
This option configures the method used by the Thunderbolt
controller to perform PCIe device enumeration.
●
Auto Switch
: The BIOS will automatically switch between
BIOS Assist and Native Thunderbolt PC device
enumeration modes to get all benefits of the installed OS
●
Native Enumeration
: The BIOS will program the
Thunderbolt controller to Native mode ( Auto Switching is
disabled)
●
BIOS Assist Enumeration
: The BIOS will program the
Thunderbolt controller to BIOS Assist mode ( Auto
Switching is disabled)
NOTE:
A reboot is required for these changes to take
effect.
USB PowerShare
This option enable/disable the USB PowerShare feature
behavior.
This option is disabled by default.
Audio
Allows you to enable or disable the integrated audio controller.
By default, the
Enable Audio
option is selected.
The options are:
●
Enable Microphone
●
Enable Internal Speaker
This option is set by default.
Keyboard Illumination
This field lets you choose the operating mode of the keyboard
illumination feature.
●
Disabled
: The Keyboard illumination will always be off or
0%.
●
Dim
: Enable the keyboard illumination feature at 50%
brightness.
●
Bright
: Enable the keyboard illumination feature at 100%
brightness level.
System setup
27