Table 4. Security menu items (continued)
Menu item
Submenu item
Selection
Comments
displayed when clearing the security
chip.
Flash BIOS Updating by
End-Users
• Disabled
•
Enabled
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.
UEFI BIOS Update Option
Secure RollBack
Prevention
•
Disabled
• Enabled
If you select
Disabled
, you can flash
to an earlier version of the UEFI
BIOS.
If you select
Enabled
, you cannot
flash to an earlier version of the UEFI
BIOS.
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
• Disabled
•
Enabled
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 you find that an application
program does not run correctly after
choosing
Enabled
, select
Disabled
and reset the setting.
Intel (R) Virtualization
Technology
•
Disabled
• Enabled
If you select
Enabled
, a Virtual
Machine Monitor (VMM) can utilize
the additional hardware capabilities
provided by Intel Virtualization
Technology.
Virtualization
Intel (R) VT-d Feature
•
Disabled
• Enabled
Intel VT-d stands for Intel
Virtualization Technology for
directed I/O. When enabled, a VMM
can utilize the platform infrastructure
for I/O virtualization.
Note:
This item is available when
the processor of your computer
supports this feature.
72
User Guide
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