Lenovo ThinkPad L520 (English) User Guide - Page 163

Function, Selection, Comments, Automatic, Disabled, Beep and Alarm, Enabled, Memory, Serial ATA

Page 163 highlights

Table 4. Config menu items (continued) Function Selection CPU Power Management • Disable • Automatic PCI Bus Power Management • Disable • Automatic Power On with AC Attach • Enabled • Disabled Beep and Alarm Power Control Beep Low Battery Alarm Password Beep • Enabled • Disabled • Enabled • Disabled • Enabled • Disabled Keyboard Beep Memory Extended Memory Test • Enabled • Disabled • Enabled • Disabled Serial ATA (SATA) SATA Controller Mode Option: • AHCI • Compatibility CPU Comments Unless this power-saving feature is disabled, it stops the processor clock automatically when there is no system activity. You usually don't need to change this function. Unless this power-saving feature is disabled, it stops the PCI bus clock automatically when there is no system activity. You usually don't need to change this function. Enables or disables a feature that powers on the system when ac power adapter is attached. If enabled, the system is powered on when ac power adapter is attached. When the system is in hibernate state, the system resumes. If disabled, the system is not powered on nor resumed when ac power adapter is attached. If this function is enabled, a beep sounds when the computer enters a power management mode, when it resumes operational mode, and when the ac power adapter is connected or disconnected. Enable or disable the Low Battery Alarm. Enable this option to have a beep sound when the system is waiting for a power-on, hard disk, or supervisor password. Different beeps will be sounded when the entered password matches or does not match the configured password. Enable or disable keyboard beep when unmanageable key combinations are pressed. Enable or disable the Extended Memory Test and initialization during boot. Enabling this function will increase boot time. Recent operating systems usually do not require Extended Memory Initialization. If you select "AHCI," the Serial ATA controller operates in AHCI mode. If you select "Compatibility," the Serial ATA controller operates in compatibility mode. Chapter 8. Advanced configuration 145

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Table 4. Config menu items (continued)
Function
Selection
Comments
CPU Power Management
Disable
Automatic
Unless this power-saving feature is disabled, it stops
the processor clock automatically when there is no
system activity. You usually don't need to change
this function.
PCI Bus Power Management
Disable
Automatic
Unless this power-saving feature is disabled, it stops
the PCI bus clock automatically when there is no
system activity. You usually don't need to change
this function.
Power On with AC Attach
Enabled
Disabled
Enables or disables a feature that powers on the
system when ac power adapter is attached.
If enabled, the system is powered on when ac power
adapter is attached. When the system is in hibernate
state, the system resumes.
If disabled, the system is not powered on nor
resumed when ac power adapter is attached.
Beep and Alarm
Power Control Beep
Enabled
Disabled
If this function is enabled, a beep sounds when the
computer enters a power management mode, when
it resumes operational mode, and when the ac power
adapter is connected or disconnected.
Low Battery Alarm
Enabled
Disabled
Enable or disable the Low Battery Alarm.
Password Beep
Enabled
Disabled
Enable this option to have a beep sound when
the system is waiting for a power-on, hard disk,
or supervisor password. Different beeps will be
sounded when the entered password matches or
does not match the configured password.
Keyboard Beep
Enabled
Disabled
Enable or disable keyboard beep when
unmanageable key combinations are pressed.
Memory
Extended Memory Test
Enabled
Disabled
Enable or disable the Extended Memory Test and
initialization during boot. Enabling this function
will increase boot time. Recent operating systems
usually do not require Extended Memory Initialization.
Serial ATA
(SATA)
SATA Controller Mode Option:
AHCI
Compatibility
If you select “AHCI,” the Serial ATA controller
operates in AHCI mode. If you select “Compatibility,”
the Serial ATA controller operates in compatibility
mode.
CPU
Chapter 8
.
Advanced configuration
145