Editing Adapter (section)

==Computer adapters==
{{main|Adapter (computing)}}
A [[Host adapter|''host controller'']] connects a computer to a peripheral device, such as a storage device, network, or human interface device. As a host controller can also be viewed as bridging the protocols used on the [[computer bus|buses]] between peripheral and computer, and internally to the computer, it is also called a ''host bus adapter''. Likewise, specific types may be called adapters: a network interface controller may be called a ''[[network adapter]]'', and a graphics card a ''[[display adapter]]''.

Adapters (often in the form of ''[[dongle]]s'') allow connecting a peripheral device with one plug to a different jack on the computer. They are often used to connect modern devices to a [[legacy port]] on an old system, or old devices to a modern port. Such adapters may be entirely [[Passivity (engineering)|passive]], or contain active circuitry.

A common type is a [[USB adapter]].

One kind of [[serial port]] adapter enables connections between [[DB-25|25-contact]] and [[D-subminiature|nine-contact]] connectors,<ref>{{cite book|last1=Andrews|first1=Jean|title=A+ guide to managing and maintaining your PC|date=2007|publisher=Thomson Course Technology|location=Boston, Mass.|isbn=978-0-619-21758-7|page=[https://archive.org/details/labmanualforagui0000andr_f5v9/page/395 395]|edition=6th|url=https://archive.org/details/labmanualforagui0000andr_f5v9|url-access=registration|quote=serial port adapter 25 9.}}</ref> but does not affect electrical power- and signalling-related attributes.