In summary, the DP40 Series External AC-DC Power Supply from Artesyn Embedded Technologies provides a maximum 40 W power output. This series has an output voltage of 9 to 48 VDC at a current rating of 4.4 A. Finally, some important features of the DP40 series include: availability in both Class I and Class II with a 2 pin AC or 3 pin AC input connector, overcurrent and overvoltage protection and a two year warranty.