Dell Latitude 7400 2-in-1 Setup And Specifications Manual page 28

Option
USB Configuration
Dell Type-C Dock Configuration
Thunderbolt™ Adapter Configuration
Thunderbolt™ Auto Switch
USB PowerShare
Audio
28 System setup
Description
Allows you to enable or disable the internal/integrated USB
configuration.
The options are:
• Enable USB Boot Support
• Enable External USB Ports
All the options are set by default.
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.