Secure Boot - Dell Latitude 7220EX Service Manual

Table 7. Security (continued)
Option
TPM 2.0 Security
Absolute
OROM Keyboard Access
Admin Setup Lockout
Master Password Lockout
SMM Security Mitigation

Secure boot

Table 8. Secure Boot
Option
Secure Boot Enable
Secure Boot Mode
Expert key Management
74 System setup
Description
Allows you to control whether the Trusted Platform Module (TPM) is visible to the operating
system.
● TPM On (default)
● Clear
● 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)
Choose any one option:
● Disabled
● Enabled (default)
This field lets you Enable, Disable or Permanently Disable the BIOS module interface of the
optional Absolute Persistence Module service from Absolute Software.
● Enabled - This option is selected by default.
● Disabled
● Permanently Disabled
This option determines whether users are able to enter Option ROM configuration screen via
hotkeys during boot.
● Enabled (default)
● Disabled
● One Time Enable
Allows you to prevent users from entering Setup when Admin password is set. This option is
not set by default.
Allows you to disable master password support Hard Disk passwords need to be cleared
before the settings can be changed. This option is not set by default.
Allows you to enable or disable additional UEFI SMM Security Mitigation protections. This
option is selected by default.
Description
Allows you to enable or disable Secure Boot feature
● Secure Boot Enable
Option is selected by default.
Allows you to modify the behavior of Secure Boot to allow evaluation or enforcement of
UEFI driver signatures.
● Deployed Mode (default)
● Audit Mode
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