To use this Movek myMix personal monitor mixer, connect it to a PoE - enabled source for power as it doesn't have its own power supply. When setting it up, make sure the PoE connection is stable. As the screen has scratches, be a bit more careful when interacting with it to avoid further damage. For maintenance, keep it in a clean and dry place. Regularly check the PoE connection for any signs of wear or disconnection. And if you notice any new issues, reach out to the support team.