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ACPI

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ACPI stands for Advanced Configuration and Power Interface, which is the alternative to APM. It is an open industry specification co-developed by Hewlett-Packard, Intel, Microsoft, Phoenix and Toshiba. The current revision of the specification is 3.0.

According to the official specification website: ACPI establishes industry-standard interfaces for OS-directed configuration and power management on laptops, desktops, and servers.

ACPI evolves the existing collection of power management BIOS code, Advanced Power Management (APM) application programming interfaces (APIs, PNPBIOS APIs, Multiprocessor Specification (MPS) tables and so on) into a well-defined power management and configuration interface specification.

The specification enables new power management technology to evolve independently in operating systems and hardware while ensuring that they continue to work together.

External Links: ACPI Specification

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