Dell OptiPlex 7040 Owner's Manual page 43

Option
CPU XD Support
OROM Keyboard Access
Admin Setup Lockout
HDD Protection Support
Table 9. Secure boot
Option
Secure Boot Enable
Expert key Management
Description
• Disable
• On-Silent — Enabled by default if chassis intrusion is detected.
Allows you to enable or disable the Execute Disable mode of the processor.
This option is enabled by default.
This option determines whether users are able to enter Option ROM
Configuration screens via hotkeys during boot. Specifically, these settings
are capable of preventing access to Intel RAID (CTRL+I) or Intel
Management Engine BIOS Extension (CTRL+P/F12)
• Enable — User may enter OROM configuration screens via the hotkey.
• One-Time Enable — User may enter OROM configuration screens via
the hotkeys on next boot only. After next boot, the setting will revert to
disabled.
• Disable — User may not enter OROM configuration screens via the
hotkey.
This option is set to Enable by default.
Allows you to enable or disable the option to enter Setup when an
Administrative password is set. This option is not set by default.
Allows you to enable or disable the HDD Protection feature. This option is
an advanced feature, which is intended to keep the HDD data secure and
unchangeable. By default, this option is disabled.
Description
Allows you to enable or disable Secure Boot feature
• Disable
• 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
• 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
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