Yes I've been doing that for a few years now where one computer power supply is driving 4-5 props spread throughout the yard. I picked up a bunch of waterproof 3 pin connectors off ebay and have been taking old computer power cords, cutting off the ends and putting on these 3-pin connectors making my own low voltage extension cords. (I run 12v, 5v and Gnd on the three wires to all my props).