Powerful live event HD switching, supporting up to 40 individual 3G-/HD-SDI inputs built into a 2 RU chassis, is at hand with the Blackmagic Design ATEM 4 M/E Constellation HD Live Production Switcher. Supporting 3G-SDI and HD-SDI signals, the switcher connects to a wide range of cameras and sources, delivering program output via 24 3G-SDI BNC outputs or a webcam output via USB-C. In addition, the switcher has four multiview outputs with up to 16 routable windows that can display inputs, keyed video, graphics, and stills from the media pool, as well as the program output. Each input connects to a built-in Fairlight audio mixer supporting up to 156 channels of audio.