Dell Latitude 3490 - Secure Boot Screen Options

Option Description
● Enabled—enabled by default
NOTE: To upgrade or downgrade TPM 2.0, download the TPM wrapper tool—software.
Computrace Allows you to activate or disable the optional Computrace software The options are:
● Deactivate
● Disable
● Activate—enabled by default
NOTE: The Activate, Deactivate, and Disable options will permanently activate or disable the feature
and no further changes will be allowed.
CPU XD Support Allows you to enable the Execute Disable mode of the processor.
Enable CPU XD Support—enabled by default
OROM Keyboard
Access
options:
Enabled (default)
Disabled
One Time Enable
Admin Setup
Lockout
Allows you to prevent users from entering Setup when an Administrator password is set.
Default Setting: The option-Enable Admin Setup lockout is disabled by default.
Master password
lockout
This option is not enabled by default
SMM Security
Mitigation
This option enables or disables additional UEFI SMM Security Mitigation protection. The operating system
can use this feature to help protect the secure environment created by virtualization based security. The
option is disabled by default.
Secure Boot screen options
Option
Description
Secure Boot
Enable
This option enables or disables the Secure Boot feature.
● Disabled
● Enabled (Default)
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—enabled by 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
●
Delete—Deletes the selected key
● Reset All Keys—Resets to default setting
● Delete All Keys—Deletes all the keys
NOTE: If you disable the Custom Mode, all the changes made are erased and the keys restore to
default settings.
82 System setup options