The FM801 PCI Joystick Windows driver is a device driver for a PCI joystick card based on the FM801 chipset. This chipset is used in some older joystick controllers, which are designed to allow you to connect a joystick or gamepad to a desktop computer via a PCI (Peripheral Component Interconnect) slot. These types of joysticks were commonly used for gaming, simulation, or other interactive applications on computers, especially during the late 1990s and early 2000s.

The FM801 PCI joystick driver allows your computer's operating system (e.g., Windows) to communicate with the joystick hardware, enabling it to function properly for games or other software that require joystick input.