This unit doesn't come with a power supply.

To use this Blackmagic Design MultiView 4 HD, you'll need to connect it to a proper power source as it doesn't include a power supply. Make sure to check the voltage requirements of your power supply before connecting. When setting it up, connect your video sources to the appropriate inputs. As for maintenance, keep it in a cool, dry place. Avoid exposing it to dust and moisture. If you need to clean it, use a soft, dry cloth to gently wipe the surface.