Watch content in up to 4k ultra hd and hdr from your phone tablet or laptop straight to your tv chromecast ultra offers clearer picture and stronger processing power so youll have faster load times and smoother streaming use with iphone ipad android mac windows device or chromebook setup in 3 easy steps plug chromecast ultra into your tvs hdmi port and power then visit chromecast comsetup and connect your device to the same wi fi network as your tv tap the cast button in a cast e