The ACPI Multiprocessor Node driver is part of the Advanced Configuration and Power Interface (ACPI) system in Windows, which is a specification for power management and system configuration. It allows the operating system to communicate with hardware components to manage power usage, configuration, and performance features.
The Multiprocessor Node refers to a system configuration where multiple processors (CPUs) or cores are present, typically in a multi-core or multi-processor setup. The driver for this node enables proper support for the system to utilize multiple CPUs/cores, ensuring that the OS can efficiently distribute workloads across multiple processors.