This is the ATEM 2 M/E Production Studio 4K: a powerful multi-camera production system that lets you attach cameras, computers, and disk recorders to produce live music, sport, and other events. It comes with 20 x 12G-SDI re-synchronized inputs. It also has 6G-SDI and HDMI 4K connections and 6 auxiliary outputs.
You can control this live production switcher from your laptop or desktop computer. The ATEM 2 M/E Production Studio 4K supports multi-view monitoring. You can find out more about it here.