This Panasonic AG - BS300 Digital Base Station comes with a correct power supply. It has a minor issue where the knob cap for the menu select wheel is missing, but this doesn't impact its functionality.

Using this Panasonic AG - BS300 Digital Base Station is easy. First, connect it to the correct power supply that comes with it. You can use the menu select wheel without worry even if the knob cap is missing. When it comes to maintenance, keep it in a dry and clean place. Avoid exposing it to extreme temperatures or humidity. If you notice any other problems, don't hesitate to contact customer service.