An adapter is a device that allows incompatible systems, components, or connectors to work together by modifying the interface, signal, or power format. Adapters are widely used in electronics, computing, and telecommunications to bridge differences in plug types, voltage levels, or communication protocols. Common types include power adapters, audio/video adapters, and network adapters. They enable seamless connectivity between devices, ensuring efficient data transfer and power conversion. Adapters enhance device versatility, making them essential for international travel, legacy system integration, and cross-platform compatibility. Their design varies based on functionality, offering solutions for both consumer and industrial applications.