DrayTek DRAYPSU17 3A PSU Compatible with 2862Vac - It is vital that you order and use the correct power supply to avoid inconvenience or damage your product. Polarity, voltage, AC/DC and DC plug type vary between models. You should only use an original PSU supplied by DrayTek; The usage of any unapproved 3rd party power supply which has not undergone our rigourous safety and operational testing and will invalidate your warranty and may permanently damage your product.