An adapter is a device or accessory that allows hardware or plugs with different shapes, standards, or connectors to fit and function together. Most commonly, adapters are used to connect electronic devices to power outlets or ports that are not natively compatible, such as allowing a plug from one country to fit into a socket from another. While adapters enable physical connection, they do not convert electrical voltage or current. Using an adapter with mismatched voltage can be dangerous and may damage your device or cause safety hazards. Always check voltage compatibility before use.