Lenovo ThinkPad T420 User Manual page 200

Config menu items
Table 8. Config menu items
Menu item
Network
USB
182
User Guide
Submenu item
Wake On LAN
Ethernet LAN Option ROM
USB UEFI BIOS Support
Always On USB
Selection
• Disabled
• AC only
• AC and Battery
• Disabled
• Enabled
• Disabled
• Enabled
• Disabled
• Enabled
Comments
Enable the system to Power
on when the Ethernet
controller receives a magic
packet.
If you select "AC Only",
Wake On LAN is enabled
only when ac power adapter
is attached.
If you select "AC and
Battery", Wake On LAN is
enabled with any power
sources.
Note: AC is required with
magic packet type Wake
On LAN.
Note: Wake On LAN
function does not work
when a hard disk password
is set.
Load the Ethernet LAN
Option ROM to enable
startup from an integrated
network device.
Enable or disable boot
support for USB diskette,
USB memory key, and USB
optical drive.
If you select "Enabled", the
external USB devices can
be charged via USB ports
even when the system is in
low power mode (standby,
hibernate, or power-off).