Lenovo PC 300PL Using your Personal Computer - PC300PL - 6562 - Page 64

Automatic Hardware Power Management Features

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Attention: If a device, such as a monitor, does not have power-management capabilities, it might be damaged when exposed to a reduced-power state. Before you make energy-saving selections for your monitor, check the documentation that comes with your monitor to see if it supports Display Power Management Signaling (DPMS). Automatic Hardware Power Management Features With Automatic Hardware Power Management, you can have the computer, microprocessor, and monitor (if the monitor supports DPMS) go into reduced-power states if they are inactive for a certain length of time. There are three levels of power management. For each level, you can specify the amount of time that the computer must be inactive before the power management options take effect. For Level 1, you can select 5 minutes to 4 hours; for Level 2, you can select 10 minutes to 5 hours; and for Level 3, you can select 15 minutes to 6 hours. At each level, you can define the amount of energy savings by specifying values for the following options. System Power: With this option, you can select On if you want the computer to remain on, or Off if you want the computer to shut down. Processor Speed: With this option, you can set your microprocessor to run at a percentage of its internal clock speed (such as, 25 or 50 percent), or you can disable the microprocessor entirely. Any computer activity returns the microprocessor to full speed. Display: With this option, you can select one of the following reduced-power states or the off state: - Standby: In this mode, the screen is blanked, but the screen image is restored immediately when any keyboard or mouse activity is detected. - Suspend: In this mode, the monitor uses less power than in Standby mode. The screen is blanked, but the screen image is restored after a slight delay when any keyboard or mouse activity is detected. - Off: In this mode, the monitor power is turned off. To restore power to the monitor, you must press the monitor power switch. On some monitors, you might have to press the power switch twice. Some monitors might not support the Off mode. Hard Disk Drive: With this option, you can enable the hard disk drive to "spin down" (shut down the drive motor) after about 20 minutes of inactivity on the drive. When you attempt to read from or write to the hard disk, the spindle starts back up within a few seconds. This feature can be activated in PC models with EIDE hard disk drives, but not in models with SCSI hard disk drives. (In 50 Using Your Personal Computer

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Attention:
If a device, such as a monitor, does not have power-management
capabilities, it might be damaged when exposed to a reduced-power state.
Before
you make energy-saving selections for your monitor, check the documentation that
comes with your monitor to see if it supports Display Power Management Signaling
(DPMS).
Automatic Hardware Power Management Features
With Automatic Hardware Power Management, you can have the computer,
microprocessor, and monitor (if the monitor supports DPMS) go into reduced-power
states if they are inactive for a certain length of time.
There are three levels of power management.
For each level, you can specify the
amount of time that the computer must be inactive before the power management
options take effect.
For Level 1, you can select 5 minutes to 4 hours; for Level 2,
you can select 10 minutes to 5 hours; and for Level 3, you can select 15 minutes to 6
hours.
At each level, you can define the amount of energy savings by specifying
values for the following options.
±
System Power:
With this option, you can select
On
if you want the computer
to remain on, or
Off
if you want the computer to shut down.
±
Processor Speed:
With this option, you can set your microprocessor to run at a
percentage of its internal clock speed (such as, 25 or 50 percent), or you can
disable the microprocessor entirely.
Any computer activity returns the
microprocessor to full speed.
±
Display:
With this option, you can select one of the following reduced-power
states or the off state:
–
Standby:
In this mode, the screen is blanked, but the screen image is
restored
immediately
when any keyboard or mouse activity is detected.
–
Suspend:
In this mode, the monitor uses less power than in Standby mode.
The screen is blanked, but the screen image is restored
after a slight delay
when any keyboard or mouse activity is detected.
–
Off:
In this mode, the monitor power is turned off.
To restore power to
the monitor, you must press the monitor power switch.
On some monitors,
you might have to press the power switch twice.
Some monitors might not
support the Off mode.
±
Hard Disk Drive:
With this option, you can enable the hard disk drive to “spin
down” (shut down the drive motor) after about 20 minutes of inactivity on the
drive.
When you attempt to read from or write to the hard disk, the spindle
starts back up within a few seconds.
This feature can be activated in PC models
with EIDE hard disk drives, but not in models with SCSI hard disk drives.
(In
50
Using Your Personal Computer