This Blackmagic Design MultiView 4 HD unit comes without a power supply. There's a known issue where SDI IN 4 doesn't work.

Using this Blackmagic Design MultiView 4 HD is straightforward. First, make sure you have your own compatible power supply as this unit doesn't come with one. When connecting your devices, be aware that the SDI IN 4 port won't work. For maintenance, keep the unit in a clean and dry place. Regularly check the connections to ensure they are secure. Avoid exposing it to extreme temperatures or humidity, as this could damage the internal components.