Auxiliary

An auxiliary is something extra that supports or enhances the main function or system. For example, in a car, auxiliary parts like a backup camera or a climate control system assist the primary operation of driving safely and comfortably. In technology, auxiliary devices such as external microphones or additional batteries serve to complement the main equipment. Essentially, auxiliary components or systems are additional tools or features that improve, support, or extend the capabilities of the primary setup, making the overall system more effective or versatile.