The OrbitSphere AF driver is likely related to a device such as a trackball, mouse, or input device produced by the brand Orbit, specifically a model designed to use a trackball or alternative pointing technology. The "AF" could refer to a specific model or version of the OrbitSphere product line, although I couldn't find a widely recognized or specific reference to "OrbitSphere AF" online.

If you're looking for a driver for an Orbit trackball mouse or similar device and you're seeing the term "OrbitSphere AF," it's most likely referring to a Windows-compatible driver that enables the device to communicate with the operating system and function properly, allowing you to customize settings like button assignments, pointer speed, and other features.