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Menu Item Description
Intel TXT Enables or disables the Intel Trusted Execution Technology (TXT). To
enable Intel TXT, Virtualization Technology must be enabled and TPM
Security must be Enabled with Pre-boot measurements. By default, the
Intel TXT option is set to Off
Power Button Enables or disables the power button on the front of the system. By
default, the Power Button option is set to Enabled.
NMI Button Enables or disables the NMI button on the front of the system. By default,
the NMI Button option is set to Disabled.
AC Power Recovery Sets how the system reacts after AC power is restored to the system. By
default, the AC Power Recovery option is set to Last.
AC Power Recovery Delay Sets how the system supports staggering of power up after AC power is
restored to the system. By default, the AC Power Recovery Delay option
is set to Immediate.
User Defined Delay (60s to
240s)
Sets the User Defined Delay when the User Defined option for AC Power
Recovery Delay is selected.
UEFI Variable Access Provides varying degrees of securing UEFI variables. When set to
Standard (the default) UEFI variables are accessible in the Operating
System per the UEFI specification. When set to Controlled, selected UEFI
variables are protected in the environment and new UEFI boot entries are
forced to be at the end of the current boot order.
Secure Boot Enables Secure Boot, where the BIOS authenticates each pre-boot image
using the certificates in the Secure Boot Policy. Secure Boot is disabled
by default.
Secure Boot Policy When Secure Boot policy is Standard, the BIOS uses the system
manufacturer’s key and certificates to authenticate pre-boot images.
When Secure Boot policy is Custom, the BIOS uses the user-defined key
and certificates. Secure Boot policy is Standard by default.
Secure Boot Policy
Summary
Displays the list of certificates and hashes that secure boot uses to
authenticate images.
Secure Boot Custom Policy Settings screen
Secure Boot Custom Policy Settings is displayed only when Secure Boot Policy is set to Custom.
In the System Setup Main Menu, click System BIOS → System Security → Secure Boot Custom Policy
Settings
.
Menu Item Description
Platform Key Imports, exports, deletes, or restores the platform
key (PK).
Key Exchange Key Database Allows you to import, export, delete, or restore
entries in the Key Exchange Key (KEK) Database.
Authorized Signature Database Imports, exports, deletes, or restores entries in the
Authorized Signature Database (db).
Forbidden Signature Database Imports, exports, deletes, or restores entries in the
Forbidden Signature Database (dbx).
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