passive PoE simmplifies Ethernet-enabled device installations by combining power and data onto one cabl Power over Ethernet(PoE) technology provides the ideal power solution to help overcome these obstacles.In Ethernet, four pairs of C5 or C5E twisted pairs are used as the medium for ransmission The actual data transmission, however,only takes up 4-pairs of wires (pairs 1-8). PoE technology utilizesthe remaining pairs(pairs 4-5 and 7-8 to conduct electricity.