Lenovo S540 Laptop User Manual


 
Table 5. Security menu items (continued)
Menu item
Submenu item Selection Comments
Physical Presence for
Clear
Disabled
Enabled
This option enables or disables the
confirmation message when you
clear 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 (If OS
Optimized is
Disabled)
Enabled (If OS
Optimized is
Enabled)
If you select Disabled, you can flash
the older version of the UEFI BIOS.
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 Virtualization
Technology.
Virtualization
Intel 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.
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.
Bluetooth Disabled
Enabled
If you select Enabled, you can use
the Bluetooth device.
USB Port
Disabled
Enabled
If you select Enabled, you can use
the USB connectors.
Memory Card Slot
Disabled
Enabled
If you select Enabled, you can use
the memory card slot for an SD card
or a MultiMediaCard.
Integrated Camera
Disabled
Enabled
If you select Enabled, you can use
the camera.
I/O Port Access
94 User Guide