You probably wondering what is miracast. Well long story short it is screen mirroring wirelessly. There are many options these days from Apple TV, Chromecast, Roku, etc. Even new TVs you buy have it built in. But the biggest limitation to those is wifi. If your wifi is not the best or you don't have any it might not work. God news is that they do sell dongles that help you connect directly to the display with no delay or issues with connections. I purchase the J5create - ScreenCast 4K Wireless Display Adapter to hook up a Windows Surface Pro 9 to display for teacher to use with her Promeathean board since IT would not allow screen casting. It worked flawlessly no lagging. So if you need something quick and easy you can pick one up on Amazon J5 Create or at Best Buy J5 Create. This unit works with Anroid, Windows, IOS, and Mac devices.