This Blackmagic Design MultiView 4 HD unit doesn't come with a power supply. It's a great option for those who already have a suitable power source.

To use this Blackmagic Design MultiView 4 HD unit, first, make sure you have a proper power supply that fits the unit's requirements. Connect the necessary cables to your devices and the MultiView unit. You can then start using it to view multiple HD sources. When using, avoid exposing the unit to extreme temperatures or humidity. For maintenance, keep the unit clean by using a soft, dry cloth to wipe it regularly. If there are any issues, check the connections first before seeking further help.