Power supply for IPN330 HD

I have a wireless Cisco IPN330HD receiver that I move from one place to another.  The power supply is mounted in an awkward position and is not easily moved.  I would like to purchase a second power supply to be able the move the receiver more easily.  The part number on the power supply is OEM ADS0202 but, I am having a hard time finding one.  I called ATT(Uverse) and they cannot sell me just the power supply.  Does anyone know where I can get a second power supply for the receiver?