Lenovo ThinkPad Edge E425 1198 User Manual page 119

Table 4. Config menu items (continued)
Menu item
Display
Power
Submenu item
Change to "F1–F12 keys"
Boot Display Device
Graphics Device
OS Detection for Switchable
Graphics
Optical Drive Speed
CPU Power Management
PCI Express Power
management
Selection
• Default
• Legacy
• ThinkPad LCD
• Analog (VGA)
• Digital on ThinkPad
• Integrated Graphics
• Switchable Graphics
• Disabled
• Enabled
• High Performance
• Normal
• Silent
• Disabled
• Enabled
• Disabled
• Enabled
Chapter 7
Comments
If you select "Default,"
pressing F1–F12 initiates
special functions illustrated
on each key. If you select
"Legacy," you can use
F1–F12 as standard
function keys.
Select the display device
that is to be activated at
boot time. This selection
is effective for boot time,
password prompt, and
ThinkPad Setup.
The Integrated Graphics
mode provides longer
battery life, while the
Switchable Graphics mode
enhances performance.
If you select "Enabled," the
system UEFI automatically
switches the graphics
device setting to Switchable
Graphics mode if the
operating system supports
this feature, and to
Integrated Graphics mode if
the operating system does
not support this feature.
Set the optical drive speed.
Unless this power-saving
feature is disabled, it
stops the processor clock
automatically when there
is no system activity. You
usually do not need to
change this function.
Enables or disables a
feature that automatically
adjusts power management
when there is no PCI
Express activity. You
usually do not need to
change this function.
.
Advanced configuration
101