Plug and Play, plug and play

Use Plug and Play as a noun or an adjective to refer to a set of specifications developed by Intel for the automatic configuration of a computer so that it works with various peripheral devices. Note capitalization. Don't hyphenate.

It's OK to use all lowercase (plug and play) for all audiences to refer to the ability of a computer to automatically configure a device that's added to it.

Don't use as a synonym for Universal Plug and Play (UPnP).

Examples
Plug and Play functionality
Plug and Play printer
Plug and Play records the information in an event log.

See also UPnP