What is the IBM PM Device Windows Driver?
The IBM PM (Power Management) Device driver is a software component that allows your Windows operating system to communicate with hardware features related to power management on IBM (or Lenovo) devices, typically laptops and desktops. Power management devices control various aspects of power usage, including sleep mode, battery monitoring, CPU power scaling, and other energy-saving functionalities.
IBM ThinkPad laptops and other IBM/Lenovo hardware.