Dell OptiPlex 5055 Ryzen CPU Tower OptiPlex 5055 Tower Owners Manual - Page 62

Option, Description, Deactivate, Enable Custom Mode, Custom Mode, PK, KEK, db, and dbx, Save to File

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Option UEFI Capsule Firmware Updates TPM 2.0 Security Computrace Chassis Intrusion Admin Setup Lockout SMM Security Mitigation Description This option controls whether this system allows BIOS updates via UEFI capsule update packages. This option is selected by default. Disabling this option will block BIOS updates from services such as Microsoft Windows Update and Linux Vendor Firmware Service (LVFS) Allows you to control whether the Trusted Platform Module (TPM) is visible to the operating system. • TPM On (default) • PPI Bypass for Enable Commands • PPI Bypass for Disable Commands • PPI Bypass for Clear Commands • Attestation Enable (default) • Key Storage Enable (default) • SHA-256 (default) • Clear • TPM State • Disable • Enable (default) This field lets you Activate or Disable the BIOS module interface of the optional Computrace Service from Absolute Software. Enables or disables the optional Computrace service designed for asset management. • Deactivate - This option is selected by default. • Disable • Activate The options are: • Disable (default) • Enable • On-Silent Allows you to enable or disable the option to enter Setup when an Administrative password is set. This option is not set by default (Disabled by Default). The options are: • Disable (default) • Enable Table 11. Secure Boot Option Secure Boot Enable Expert key Management Description Allows you to enable or disable Secure Boot feature • Disable (selected by default) • Enable Allows you to manipulate the security key databases only if the system is in Custom Mode. The Enable Custom Mode option is disabled by default. The options are: • PK (default) • KEK • db • dbx If you enable the Custom Mode, the relevant options for PK, KEK, db, and dbx appear. The options are: • Save to File- Saves the key to a user-selected file • Replace from File- Replaces the current key with a key from a user-selected file • Append from File- Adds a key to the current database from a user-selected file 62 System setup

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Option
Description
UEFI Capsule Firmware Updates
This option controls whether this system allows BIOS updates via UEFI capsule update packages.
This option is selected by default. Disabling this option will block BIOS updates from services such as
Microsoft Windows Update and Linux Vendor Firmware Service (LVFS)
TPM 2.0 Security
Allows you to control whether the Trusted Platform Module (TPM) is visible to the operating
system.
•
TPM On (default)
•
PPI Bypass for Enable Commands
•
PPI Bypass for Disable Commands
•
PPI Bypass for Clear Commands
•
Attestation Enable (default)
•
Key Storage Enable (default)
•
SHA-256 (default)
•
Clear
•
TPM State
•
Disable
•
Enable (default)
Computrace
This field lets you Activate or Disable the BIOS module interface of the optional Computrace Service
from Absolute Software. Enables or disables the optional Computrace service designed for asset
management.
•
Deactivate
- This option is selected by default.
•
Disable
•
Activate
Chassis Intrusion
The options are:
•
Disable (default)
•
Enable
•
On-Silent
Admin Setup Lockout
Allows you to enable or disable the option to enter Setup when an Administrative password is set.
This option is not set by default (Disabled by Default).
SMM Security Mitigation
The options are:
•
Disable (default)
•
Enable
Table 11. Secure Boot
Option
Description
Secure Boot Enable
Allows you to enable or disable Secure Boot feature
•
Disable (selected by default)
•
Enable
Expert key Management
Allows you to manipulate the security key databases only if the system is in Custom Mode. The
Enable Custom Mode
option is disabled by default. The options are:
•
PK (default)
•
KEK
•
db
•
dbx
If you enable the
Custom Mode
, the relevant options for
PK, KEK, db, and dbx
appear. The
options are:
•
Save to File
- Saves the key to a user-selected file
•
Replace from File
- Replaces the current key with a key from a user-selected file
•
Append from File
- Adds a key to the current database from a user-selected file
62
System setup