Lenovo ThinkPad L560 User Manual page 119

Table 3. Security menu items (continued)
Menu item Submenu item
Clear Security Chip
Intel TXT Feature
* Unselectable when
Intel PTT is enabled.
Physical Presence
for Provisioning
Physical Presence
for Clear
UEFI BIOS Update Flash BIOS Updating
Option by End-Users
Secure RollBack
Prevention
Memory Protection Execution
Prevention
Value
• Disabled
• Enabled
• Disabled
(For Intel PTT)
• Enter
• Disabled
• Enabled
• Disabled
• Enabled
• Disabled
• Enabled
• Disabled
• Enabled
• Disabled
• Enabled
• Disabled
• Enabled
Comments
the security chip is visible, but it is not
functional. If you select Disabled, the
security chip is hidden and it is not
functional.
Note: This item is displayed when
Security Chip Selection is set to
Discrete TPM.
If you select Enabled, the security chip
is functional. If you select Disabled,
the security chip is hidden and it is not
functional.
Note: This item is displayed when
Security Chip Selection is set to Intel
PTT.
Clear the encryption key.
Note: This item is displayed only if you
have selected Active or Enabled for the
Security Chip option.
Enable or disable Intel Trusted Execution
Technology.
Notes:
• This item is displayed only if you have
selected Active or Enabled for the
Security Chip option.
• This is set to disabled when Intel PTT
is enabled.
This option enables or disables the
confirmation message when you change
the settings of the security chip.
This option enables or disables the
confirmation message when you clear
the security chip.
If you select Enabled, all users can
update the UEFI BIOS. If you select
Disabled, only the person who knows
the supervisor password can update the
UEFI BIOS.
If you select Disabled, you can flash the
older version UEFI BIOS.
Some computer viruses and worms
cause memory buffers to overflow. By
selecting Enabled you can protect
your computer against attacks by such
viruses and worms. If after choosing
Enabled you find that a program does
not run correctly, select Disabled and
reset the setting.
.
Chapter 8 Advanced configuration
103