Lenovo ThinkPad T550, User Manual

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Table 4. Security menu items (continued)
Menu item Submenu item Value Comments
• This item is displayed only if you have
selected Active or Enabled for the Security
Chip option.
• This is set to disabled when Intel PTT is
enabled.
Physical Presence
for Provisioning • Disabled
• Enabled
This option enables or disables the confirmation
message when you change the settings of the
security chip.
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
• 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 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 Intel 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 connection.
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 Bluetooth
devices.
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 slots.
Smart Card Slot • Disabled
• Enabled
If you select Enabled , you can use the smart
card reader slot.
I/O Port Access
Chapter 6
.
Advanced configuration
85