The Videohub 20x20 12G Zero-Latency Video Router from Blackmagic Design centralises SDI cabling for 20 sources and 20 destinations in a compact 1RU frame, routing any combination of SD, HD, UHD 4K and DCI 4K video -- any input to any output, or one input to several outputs -- without a tangle of cables or a patch diagram to consult. Multi-rate 12G-SDI connections handle up to 20 different video standards at the same time, with support for resolutions up to DCI 4K60. A sleek front panel puts assignable-shortcut buttons and a machined metal spin knob with an electronic clutch alongside a 2.2-inch LCD that previews the live input before routing and scrolls through sources in alphabetical order. SDI reclocking runs on every output to hold picture quality over longer cable runs, and the router is compatible with the Videohub Master Control Pro and Smart Control Pro hardware panels, with Mac and Windows control software included.