A modular plug (14) includes a plug housing (34) having a mating end (36) and a cable end (38) and plug contacts (42) at the mating end. The plug housing (34) and the plug contacts (42) are shaped and positioned to define an RJ-45 modular plug mating interface. The plug contacts (42) are arranged into a first group and a second group with each of the plug contacts (42) in the first group being electrically commoned to form a first power circuit and each of the plug contacts (42) in the second group being electrically commoned to form a second power circuit. The first and second power circuits are terminated to different wires (44) of a cable (18).