Lenovo ThinkPad Edge E420s User Manual page 128

Table 3. Config menu items (continued)
Menu item
Power
110
User Guide
Submenu item
®
Intel SpeedStep
technology (Intel
SpeedStep mounted
models only)
CPU Power Management
PCI Express Power
Management
Disable Built-in Battery
Selection
• Disabled
• Enabled
Mode for AC
• Maximum Performance
• Battery Optimized
Mode for Battery
• Maximum Performance
• Battery Optimized
• Disabled
• Enabled
• Disabled
• Enabled
• Yes
• No
Comments
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
Enable or disable the power
saving feature that stop
the microprocessor clock
automatically when there
are no system activities.
Normally, it is not necessary
to change the setting.
Enable or disable a feature
that automatically adjusts
power management when
there is no PCI Express
activity. Normally, it is not
necessary to change the
setting.
Temporarily disable battery
for servicing the system.
After selecting this item, the
system will be automatically
powered off. The system is
then ready to be serviced.
Note: The ac power
adapter must be
disconnected from the
system to perform this
operation.
The battery will be
automatically re-enabled
when the ac power adapter
is reconnected to the
system.