Dell OptiPlex 5055 Ryzen APU Tower Owner's Manual page 65

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Table 10. Security (continued)
Option
Computrace
Chassis Intrusion
Admin Setup Lockout
SMM Security Mitigation
Table 11. Secure Boot 
Option
Secure Boot Enable
Expert key Management
Table 12. Performance 
Option
C States Control
AMD TurboCore Technology
Description
○ 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
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
● 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 will be erased and the
keys will restore to default settings.
Description
Allows you to enable or disable additional processor sleep
states. This option is enabled by default.
This options is enabled by default.
System setup
65

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