What is the definition of an accessory system?

An accessory system refers to a collection of additional components or devices that enhance the functionality or capability of a primary system, often found in technology or machinery. These accessories can include peripheral devices, add-ons, or supplementary tools that support the main system's operation. In automotive contexts, for example, accessory systems might include features like audio systems, navigation units, or enhanced lighting. Overall, they serve to improve user experience or system performance without being essential for basic operation.