Enjoy ultra-high-resolution content with the Chromecast Ultra from Google. This device plugs into your TV or home theater receiver's HDMI port, enabling you to stream media from your mobile device or the web. It supports video with 4K Ultra HD (3840 x 2160) resolution for use with compatible displays. It connects to your home network via 802.11ac Wi-Fi or the included Ethernet adapter. Set it up with the free Chromecast mobile app, then send your favorite online shows, movies, music, and more to your TV using your smartphone, tablet, or laptop.