Connecting/disconnecting the charger to/from the power supply system

To connect the charger to the power supply system:
  1. Use only the NT 5-20 UCW power supply unit from Sennheiser.
  2. Connect the USB-C plug on the charging cable to the USB-C port on the side of the charger.
  3. Plug the power supply unit with the correct country adapter into a suitable power outlet.

To disconnect the charger from the power supply system:
  1. Unplug the power supply unit from the wall socket.
  2. Remove the USB-C plug on the charging cable from the USB-C port on the side of the charger.