Lenovo ThinkPad Edge E531 - Manual (Page 128)

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 flash the older version
UEFI BIOS.
Memory Protection Execution Prevention • Disabled
• Enabled
Some computer viruses
and worms cause memory
buffers to overflow 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 find
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
112 User Guide