Chapter 12. Additional Service Information (Type Rs690); Power Management - Lenovo 3000 H220 Hardware Maintenance Manual

Hardware Maintenance Manual
Additional Service
Information
(Type RS690)
This chapter provides additional information that the service
representative might find helpful.

Power management

Power management reduces the power consumption of certain
components of the computer such as the system power supply, processor,
hard disk drives, and some monitors.
Automatic configuration and power interface (ACPI)
BIOS
Being an ACPI BIOS system, the operating system is allowed to control
the power management features of the computer and the setting for
Advanced Power Management (APM) BIOS mode is ignored. Not all
operating systems support ACPI BIOS mode.
Power Management features
The Power Management features within the Power menu allow you to
enable and disable features that turn on the computer automatically.
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Resume On PME#: This feature allows PCI cards, PCI-E cards and On-
board LAN which support this capability to wake the system.
RTC Resume: You can specify a date and time at which the computer
will be turned on automatically. This can be either a single event or a
daily event.
USB Device Wakeup From S3:
the System from S3.
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This feature allows USB Device to wake