Lenovo E520, E420, 114155U manual Security menu items

Security menu items

Table 5. Security menu items

Menu item	Submenu item	Selection		Comments
Password				Refer to “Security menu”
				on page 114 and “Using
				passwords” on page 59.
UEFI Update Option	Flash UEFI Updating by	•	Disabled	If you select “Enabled”,
	End-Users	•	Enabled	all users can update the
				Flash UEFI. If you select
				“Disabled”, only the person
				who knows supervisor
				password can update the
				Flash UEFI.
Memory Protection	Execution Prevention	•	Disabled	Some computer viruses
		•	Enabled	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.
Virtualization	Intel Virtualization	•	Disabled	If you select “Enabled,”
	Technology	•	Enabled	a VMM (Virtual Machine
				Monitor) can utilize the
				additional hardware
				capabilities provided
				by Intel Virtualization
				Technology.
	Intel VT-d Feature	•	Disabled	Intel VT-d is Intel
		•	Enabled	Virtualization Technology
				for Directed I/O. When
				enabled, a VMM can utilize
				the platform infrastructure
				for I/O virtualization.
I/O Port Access	Ethernet LAN	•	Disabled	If you select “Enabled”, you
		•	Enabled	can use the Ethernet LAN
				device.
	Wireless LAN	•	Disabled	If you select “Enabled”, you
		•	Enabled	can use the Wireless LAN
				device.
	WiMAX	•	Disabled	If you select “Enabled”, you
		•	Enabled	can use the WiMAX device.
	Wireless WAN	•	Disabled	If you select “Enabled”, you
		•	Enabled	can use the Wireless WAN
				device.

120User Guide