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Definition: Miracast

A protocol that streams the screen content from Miracast-enabled devices to a TV, projector or monitor that either supports Miracast or has an adapter plugged in (see below). Supporting 1080p video, 5.1 surround sound and Wi-Fi Direct for wireless transmission, Miracast is the non-Apple equivalent of Apple's AirPlay protocol. The first Miracast devices were certified by the Wi-Fi Alliance in 2012. See Wi-Fi Direct.

Microsoft's Miracast Device
Miracast adapters connect to the external screen via HDMI for signal and USB for power. This Microsoft adapter enables Windows devices to mirror their screen on a TV, video projector or monitor (see Wireless Display Adapter). (Image courtesy of Microsoft Corporation.)