Adapter

Some modify power or signal attributes, while others merely adapt the physical form of one connector to another.

Many countries with ties to Europe use 230-volt, 50 Hz AC mains electricity, using a variety of power plugs and sockets.

Adapters (sometimes called dongles) allow connecting a peripheral device with one plug to a different jack on the computer.

One kind of serial port adapter enables connections between 25-contact and nine-contact connectors,[2] but does not affect electrical power- and signalling-related attributes.

In software, an adapter is a piece of code that complies with an interface of an existing component while actually using another implementation.