This Klark Teknik DN9650 Digital Audio Network Bridge does not come with a network module. It includes a proper power supply. However, there are some known issues. There are multiple missing screws, and some of the existing screws are slightly stripped, which might make card - switching a bit tough. Also, the front - left and back - right rack ears are bent.

To use the Klark Teknik DN9650 Digital Audio Network Bridge, first, make sure you connect it to the correct power supply that comes with it. You can then start setting up your audio network connection. But be careful when switching the card because some of the screws are missing or stripped. When handling the device, avoid putting too much pressure on the bent rack ears as it could cause further damage. For maintenance, keep it in a clean and dry place. Regularly check the screws to see if any more go missing. If you find any new issues, it's best to get professional help to fix them.