Lenovo ThinkPad Edge E420s (English) User Guide - Page 130

Menu item, Selection, Comments, Memory Protection, Enabled, Disabled, Virtualization, I/O Port Access

Page 130 highlights

Table 4. Security menu items (continued) Menu item Submenu item Memory Protection Execution Prevention Selection • Disabled • Enabled Virtualization Intel Virtualization Technology • Disabled • Enabled I/O Port Access Intel VT-d Feature Ethernet LAN Wireless LAN WiMAX Wireless WAN Bluetooth USB Port eSATA Port • Disabled • Enabled • Disabled • Enabled • Disabled • Enabled • Disabled • Enabled • Disabled • Enabled • Disabled • Enabled • Disabled • Enabled • Disabled • Enabled Comments 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 an application program does not run correctly, select "Disabled" and reset the setting. If you select "Enabled," a VMM (Virtual Machine Monitor) can utilize the additional hardware capabilities provided by Intel Virtualization Technology. Intel VT-d is Intel Virtualization Technology for Directed I/O. When enabled, a VMM can utilize the platform infrastructure for I/O virtualization. If you select "Enabled," you can use the Ethernet LAN device. If you select "Enabled," you can use the Wireless LAN device. If you select "Enabled", you can use the WiMAX device. If you select "Enabled," you can use the Wireless WAN device. If you select "Enabled," you can use the Bluetooth device. If you select "Enabled," you can use the USB port. If you select "Enabled," you can use the eSATA Port. 112 User Guide

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Table 4. Security menu items (continued)
Menu item
Submenu item
Selection
Comments
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 an application
program does not run
correctly, select “Disabled”
and reset the setting.
Intel Virtualization
Technology
Disabled
Enabled
If you select “Enabled,”
a VMM (Virtual Machine
Monitor) can utilize the
additional hardware
capabilities provided
by Intel 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.
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.
WiMAX
Disabled
Enabled
If you select “Enabled”, you
can use the WiMAX 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 port.
eSATA Port
Disabled
Enabled
If you select “Enabled,” you
can use the eSATA Port.
I/O Port Access
112
User Guide