This Blackmagic Design Mini SDI Distribution Converter comes without a power supply. It has a known issue where one of the SDI outputs doesn't work.

To use this converter, you'll need to connect it to your SDI setup. But remember, it doesn't come with a power supply, so you'll have to provide your own. When using, be aware that one of the SDI outputs isn't working. As for maintenance, keep it in a dry and clean place. Don't expose it to extreme temperatures or moisture. If you notice any other issues, it's best to check the connections first.