Dell XPS 16 9640 Owner's Manual page 100

Table 41. BIOS Setup options—Pre-boot Behavior menu (continued)
Preboot Behavior
Extend BIOS POST Time
MAC Address Pass-Through
Mouse/Touchpad
Sign of Life
Early Logo Display
Early Keyboard Backlight
Table 42. BIOS Setup options—Virtualization menu
Virtualization Support
Intel Virtualization Technology
Enable Intel Virtualization Technology (VT)
VT for Direct I/O
Enable Intel VT for Direct I/O
Intel Trusted Execution Technology
(TXT)
DMA Protection
Enable Pre-Boot DMA Support
100 BIOS Setup
By default, the Prompt on Warnings and Errors option is selected. Stop,
prompt, and wait for user input when warnings or errors are detected.
NOTE: Errors deemed critical to the operation of the computer hardware
stop the functioning of the computer.
Sets the BIOS POST (Power-On Self-Test) load time.
By default, the 0 seconds option is selected.
Replaces the external NIC MAC address (in a supported dock or dongle) with the
selected MAC address from the computer.
By default, the Passthrough MAC Address option is selected.
Defines how the computer handles mouse and touchpad input.
By default, the Touchpad and PS/2 Mouse option is selected. Leaves the
integrated touchpad enabled when an external PS/2 mouse is present.
Display Logo Sign of Life.
By default, the Early Logo Display option is enabled.
Keyboard Backlight Sign of Life.
By default, the Early Keyboard Backlight option is enabled.
When enabled, the computer can run a Virtual Machine Monitor (VMM).
By default, the Enable Intel Virtualization Technology (VT) option is enabled.
When enabled, the computer can perform Virtualization Technology for Direct
I/O (VT-d). VT-d is an Intel method that provides virtualization for memory map
I/O.
By default, the Enable Intel VT for Direct I/O option is disabled.
Intel Trusted Execution Technology (TXT) is a set of hardware extensions to Intel
processors and chipsets. It provides a hardware-based root of trust to ensure
that a platform boots with a known good configuration of firmware, BIOS, virtual
machine monitor, and operating system. The following must be enabled in order
to enable Intel TXT -
● Intel Virtualization Technology - X
● Intel Virtualization Technology - Direct
By default, the Intel Trusted Execution Technology (TXT) option is disabled.
For additional security, Dell Technologies recommends keeping the Intel Trusted
Execution Technology (TXT) option enabled.
Allows you to control the Pre-Boot DMA protection for both internal and external
ports. This option does not directly enable DMA protection in the operating
system.
NOTE: This option is not available when the virtualization setting for IOMMU
is disabled (VT-d/AMD Vi).