This product comes with a correct power supply. There's a minor issue where the backlights of the 'SDI' and 'EMBED' buttons are out, but the buttons still work fine.

To use this Blackmagic Design 4K UltraStudio, first make sure to connect it to your device using the Thunderbolt 2 cable. Then, plug in the provided correct power supply. When you notice that the 'SDI' and 'EMBED' buttons' backlights are out, don't worry as they still function. For maintenance, keep it in a dry and cool place. Avoid exposing it to extreme temperatures or humidity. Regularly check the connections to ensure a stable performance.