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Table 4. Cong menu items (continued)
Menu item
Submenu item Selection Comments
Boot Display Device
• ThinkPad LCD
• Analog (VGA)
• HDMI
Select the display device
that is to be activated at
boot time. This selection
is effective for boot time,
password prompt, and
ThinkPad Setup.
Graphics Device • Switchable Graphics
• Integrated Graphics
The Integrated Graphics
mode provides longer
battery life, while the
Switchable Graphics mode
enhances performance.
Display
OS Detection for Switchable
Graphics
• Disabled
• Enabled
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.
Intel SpeedStep
®
technology
• Disabled
• Enabled
Mode for AC
• Maximum Performance
• Battery Optimized
Mode for Battery
• Maximum Performance
• Battery Optimized
Select the mode of Intel
SpeedStep technology at
runtime.
• Maximum
Performance: Always
highest speed
• Battery Optimized:
Always lowest speed
• Disabled: No runtime
support, lowest speed
Note: This sub-menu is not
supported in models with
an AMD CPU.
CPU Power Management
• Disabled
• Enabled
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.
Power
PCI Express Power
management
• Disabled
• Enabled
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.
Beep and Alarm Keyboard Beep • Disabled
• Enabled
Enables or disables the
keyboard beep when
unmanageable key
combinations are pressed.
106 User Guide