The ATI Rage Mobility AGP is a graphics processing unit (GPU) developed by ATI Technologies (now part of AMD). It was commonly used in laptops and some desktop systems in the late 1990s and early 2000s. The AGP (Accelerated Graphics Port) refers to the interface used to connect the graphics card to the motherboard for faster data transfer, particularly important for rendering 3D graphics in games and professional applications.

The ATI Rage Mobility AGP Windows driver is a software package that allows Windows to communicate with and control the graphics hardware. Without the proper driver, the graphics card may not function correctly or optimally, and the display may appear incorrect, or not work at all.