Lenovo E531, E431 Menu item Submenu item Selection Comments, For Both with Uefi first IPv4 First

Table 4. Config menu items (continued)

Menu item	Submenu item	Selection		Comments
	UEFI PXE Boot Priority	•	IPv6 First	Select network stack
	(for Both with UEFI first	•	IPv4 First	priority for UEFI PXE boot.
	boot mode, and IPv6
	and IPv4 stacks are both
	enabled.)
USB	USB UEFI BIOS Support	•	Disabled	Enables or disables boot
		•	Enabled	support for USB storage
				devices.
	Always On USB	•	Disabled	If you select Disabled,
		•	Enabled	the external USB devices
				cannot be charged through
				USB connectors.
	Always On USB Charge in	•	Disabled	If you select Enabled, the
	off mode	•	Enabled	Always On USB connector
				enables you to charge
				some mobile digital devices
				and smartphones when
				the computer is powered
				off on the condition that
				the ac power adapter is
				connected.
Keyboard/Mouse	Fn and Ctrl Key swap	•	Disabled	If you select Enabled, the
		•	Enabled	Fn key works as the Ctrl
				key, and the Ctrl key works
				as the Fn key.
				Note: Even when Enabled
				is selected, you need to
				press the Fn key to resume
				the computer from sleep
				mode to normal operation.
	Change to “F1–F12 keys”	•	Default	If you select Default,
		•	Legacy	pressing F1–F12 initiates
				special functions illustrated
				on each key. If you
				select Legacy to initiate
				the special functions
				illustrated on each key,
				you need to press Fn and
				the corresponding key
				simultaneously.
Display	Boot Display Device	•	ThinkPad LCD	Select the display device
		•	Analog (VGA)	that is to be activated at
				boot time. This selection
		•	HDMI
				is effective for boot time,
				password prompt, and
				ThinkPad Setup.
	Graphics Device	•	Switchable Graphics	The Integrated Graphics
		•	Integrated Graphics	mode provides longer
				battery life, while the
				Switchable Graphics mode
				enhances performance.

Chapter 7. Advanced configuration 107