The Buttons and OSDs ACPI Driver Gen2 is a Windows driver that enables communication between the system's hardware and the operating system for managing On-Screen Display (OSD) and buttons (such as the power button, volume buttons, or other special function keys) on a laptop or desktop. These features are typically associated with hardware buttons and user interface elements like adjusting brightness, volume, or launching specific system functions, often found on laptops, especially from manufacturers like Lenovo, Dell, HP, and others.

ACPI stands for Advanced Configuration and Power Interface, which is a standard that allows operating systems to communicate with hardware devices and manage system power efficiently. The "Gen2" in the driver name suggests it is the second-generation version of the driver, possibly optimized for newer hardware or systems.

The Buttons and OSDs ACPI Driver Gen2 enables the proper functioning of these system features, ensuring that button presses and on-screen displays are correctly recognized and managed by Windows.