Dell Latitude 7390 Owner's Manual page 59

Option Description
Enable Master Password Lockout This option is not selected by default.
SSM Security Allows you to enable or disable additional UEFI SMM Security Mitigation protections. The OS can use the feature
Mitigation to help protect the secure environment created by virtualization based security.
SSM Security Mitigation This option is disabled by default.
Secure Boot
Option Description
Secure Boot Enable This option enables or disables the Secure Boot feature.
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Default setting: Enabled.
Expert Key Allows you to manipulate the security key databases only if the system is in Custom Mode. The Enable Custom
Management Mode option is disabled by default.
Custom Mode Key Allows you to manage the security key databases only if the system is in Custom Mode .The options are:
Management
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Intel software Guard Extensions
Option Description
Intel SGX Enable This option enables or disables to provide a secured environment for running code/storing sensitive information in
the context of the main OS. The options are:
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Enclave Memory Allows you to reserve the memory size. The memory size can be set from 32 MB to 128 MB, these options are
Size disabled by default. The options are:
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Disabled
Enabled
PK. This option is selected by default.
KEK
db
dbx
NOTE: If you disable the Enable Custom Mode, all the changes made will be erased and the keys will
restore to default settings. Save to File will save the key to a user-selected file.
Disabled
Enabled
Software Controlled.This option is selected by default.
32 MB
64 MB
128 MB
System setup 59