Lenovo ThinkPad E575 User Manual page 78

Values: Enabled, Disabled
Descriptions: Enable or disable the security chip.
• Clear Security Chip
Descriptions: Use this option to clear the encryption key.
• Physical Presence for Provisioning
Values: Enabled, Disabled
Descriptions: Enable or disable confirmation of a user's physical presence when provisioning the security
chip. Select Enabled to display user confirmation screen when provisioning. If you select Disabled, no
user confirmation screen when provisioning.
Note: This item is displayed only on the TPM 1.2 support model.
• Physical Presence for Clear
Values: Disabled, Enabled
Descriptions: If this option is enabled, a confirmation message is displayed when you clear the security
chip.
UEFI BIOS Update Option
• Flash BIOS Updating by End-Users
Values: Disabled, Enabled
Descriptions: When this option is enabled, all users can update the UEFI BIOS. If you disable this option,
only the person who knows the supervisor password can update the UEFI BIOS.
• Secure RollBack Prevention
Values: Disabled, Enabled
Descriptions: When this option is disabled, you can flash the UEFI BIOS to earlier version.
Note: This item is set as Disabled by default when the OS Optimized Defaults on the Restart menu is
set as Disabled. This item is set as Enabled by default when the OS Optimized Defaults is set as
Enabled.
Memory Protection
• Execution Prevention
Values: Disabled, Enabled
Descriptions: Some computer viruses and worms cause memory buffers to overflow. By enabling this
option, you can protect your computer against attacks from such viruses and worms. If the option is
enabled but you find that a program does not run properly, disable this option first and then reset the
settings.
Virtualization
• Intel Virtualization Technology
Values: Disabled, Enabled
Descriptions: If this option is enabled, a Virtual Machine Monitor (VMM) can utilize the additional hardware
capabilities provided by Intel Virtualization Technology.
Note: This sub-menu is available on models with an Intel CPU.
• Intel VT-d Feature
Values: Disabled, Enabled
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ThinkPad E570, E570c, and E575 User Guide