To use this Klark Teknik DN9650 Digital Bridge for Audio Network, first make sure you connect it to the correct power supply. As it doesn't have a Network Module, you'll need to get one separately if you want full functionality. When handling the unit, be careful around the side where the 3 screws are missing. For maintenance, keep it in a clean and dry place. Regularly check for any further loose parts or signs of damage. Don't expose it to extreme temperatures or humidity as this could affect its performance.