Dell 5WC10 Installation And Service Manual page 59

Option Description
Intel(R) TXT Enables you to set the Intel Trusted Execution Technology (TXT) option. To enable the Intel TXT option,
virtualization technology and TPM Security must be enabled with Pre-boot measurements. This option is
set to Off by default.
Power Button Enables you to set the power button on the front of the system. This option is set to Enabled by default.
AC Power Sets how the system behaves after AC power is restored to the system. This option is set to Last by
Recovery default.
AC Power Enables you to set the time that the system should take to turn on after AC power is restored to the
Recovery Delay system. This option is set to Immediate by default.
User Defined Enables you to set the User Defined Delay option when the User Defined option for AC Power
Delay (60 s to Recovery Delay is selected.
600 s)
UEFI Variable Provides varying degrees of securing UEFI variables. When set to Standard (the default), UEFI variables
Access 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.
In-Band When set to Disabled, this setting hides the Management Engine's (ME), HECI devices, and the system's
Manageability IPMI devices from the operating system. This prevents the operating system from changing the ME
Interface power capping settings, and blocks access to all in-band management tools. All management should be
managed through out-of-band. This option is set to Enabled by default.
Secure Boot Enables Secure Boot, where the BIOS authenticates each pre-boot image by using the certificates in the
Secure Boot Policy. Secure Boot is set to Disabled by default.
Secure Boot When Secure Boot policy is set to Standard, the BIOS uses the system manufacturer key and certificates
Policy to authenticate pre-boot images. When Secure Boot policy is set to Custom, the BIOS uses the user-
defined key and certificates. Secure Boot policy is set to Standard by default.
Secure Boot Enables you to configure how the BIOS uses the Secure Boot Policy Objects (PK, KEK, db, dbx).
Mode
If the current mode is set to Deployed Mode, the available options are User Mode and Deployed Mode.
If the current mode is set to User Mode, the available options are User Mode, Audit Mode, and
Deployed Mode.
Options
User Mode
Audit Mode
Table 33. TPM Advanced Settings Details (continued)
Option
TPM PPI Bypass Clear
NOTE: BIOS update requires HECI devices to be operational and DUP updates require IPMI interface
to be operational. This setting needs to be set to Enabled to avoid updating errors.
Description
In User Mode, PK must be installed, and BIOS performs signature verification on
programmatic attempts to update policy objects.
BIOS allows unauthenticated programmatic transitions between modes.
In Audit mode, PK is not present. BIOS does not authenticate programmatic
updates to the policy objects, and transitions between modes.
Description
(PPI), prompts when issuing PPI Advanced
Configuration and Power Interface (ACPI)
provisioning operations. This option is set to
Disabled by default.
When set to Enabled allows the Operating
System to bypass Physical Presence Interface
(PPI), prompts when issuing PPI Advanced
Configuration and Power Interface (ACPI)
provisioning operations. This option is set to
Disabled by default.
Pre-operating system management applications 59