This unit doesn't come with a power supply and has only undergone a power test.

Using this Blackmagic Design Videohub Master Control is simple. First, you'll need to connect an appropriate external power supply as the unit doesn't have one included. Before turning it on, make sure all connections are secure. When using, keep it in a well - ventilated area to prevent overheating. As for maintenance, clean the unit regularly with a soft, dry cloth. Don't use harsh chemicals. If you notice any issues during use, such as unusual noises or malfunctions, stop using it immediately and check the connections or seek professional help.