Lenovo E531 Tablet User Manual


 
Table 5. Security menu items (continued)
Menu item
Submenu item Selection Comments
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 ash the older version
UEFI BIOS.
Memory Protection Execution Prevention Disabled
Enabled
Some computer viruses
and worms cause memory
buffers to overow by
running code where only
data is allowed. If the
Data Execution Prevention
feature can be used with
your operating system, then
by selecting Enabled you
can protect your computer
against attacks by such
viruses and worms. If after
choosing Enabled you nd
that a program does not run
correctly, select Disabled
and reset the setting.
Intel Virtualization
Technology
Disabled
Enabled
If you select Enabled, a
Virtual Machine Monitor
(VMM) can utilize the
additional hardware
capabilities provided by
Virtualization Technology.
Virtualization
Intel VT-d Feature Disabled
Enabled
Intel VT-d is Intel
Virtualization Technology
for Directed I/O. When
enabled, a VMM can utilize
the platform infrastructure
for I/O virtualization.
Note: This sub-menu is not
supported in models with
an AMD CPU.
Ethernet LAN Disabled
Enabled
If you select Enabled, you
can use the Ethernet LAN
device.
Wireless LAN Disabled
Enabled
If you select Enabled, you
can use the wireless LAN
device.
Wireless WAN Disabled
Enabled
If you select Enabled, you
can use the wireless WAN
device.
I/O Port Access
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