Dell 23.8" OptiPlex 7410 All-in-One Desktop Computer (Gray) - Manual (Page 114)

Table 33. System setup options—Security menu (continued)
Security
For additional security, Dell Technologies recommends keeping the PPI Bypass
for Clear Commands option disabled.
Clear When enabled, the Clear option clears the information stored in the PTT fTPM
after exiting the system's BIOS. This option returns to disabled state when the
system restarts.
By default, the Clear option is disabled.
Dell Technologies recommends enabling the Clear option only when PTT fTPM
data needs to be cleared.
Chassis intrusion
Chassis Intrusion Detection Allows you to control the chassis intrusion feature. This feature notifies the user
when the base cover has been removed from the computer.
When set to Enabled , a notification is displayed on the next boot and the event
is logged in the BIOS Events log.
When set to On-Silent , the event is logged in the BIOS Events log, but no
notification is displayed.
When set to Disabled , no notification is displayed and no event is logged in the
BIOS Events log.
By default, the Chassis Intrusion Detection option is enabled.
For additional security, Dell Technologies recommends keeping the Chassis
Intrusion Detection option enabled.
Block Boot Until Cleared Enables or disables the Block Boot Until Cleared option.
By default, the Block Boot Until Cleared option is enabled.
NOTE: When enabled, the computer does not boot until the chassis intrusion
is cleared. If the administrator password is set, Setup has to be unlocked
before the warning can be cleared.
Legacy Manageability Interface Access Allows the administrator to control the access to BIOS configuration through the
Legacy Manageability Interface option. When enabled, this prevents the BIOS
Administrator password-based manageability tools from running, prevents some
Dell software applications from reading configuration settings, and/or prevents
changes to the BIOS configuration settings.
When enabled, this option only supports the Authenticated BIOS Manageability
Interface (ABI) for managing the BIOS configuration changes. To support this
feature, ABI must be enabled and provisioned.
When set to Enabled , the Legacy Manageability Interface can be used to read
and change BIOS configuration settings.
When set to Read-Only , BIOS configuration settings can be read, but cannot be
changed through the Legacy Manageability Interface.
When set to Disabled , the Legacy Manageability Interface is disabled. BIOS
configuration reads and writes are blocked.
SMM Security Mitigation Enables or disables additional UEFI SMM Security Mitigation protections. This
option uses the Windows SMM Security Mitigations Table (WSMT) to confirm to
the operating system that security best practices have been implemented by the
UEFI firmware.
By default, the SMM Security Mitigation option is enabled.
For additional security, Dell Technologies recommends keeping the SMM
Security Mitigation option enabled unless you have a specific application which
is not compatible.
114 BIOS setup