Power over Ethernet (PoE) delivers power and data to PoE-enabled devices over the same ethernet cable. Ethernet cables contain 4 pairs of wire, but most networks only use 2 of the pairs for data transmission. PoE uses the 2 unused pairs of wire to provide DC power to the device. This allows the deployment of PoE compatible devices in locations that lack electricity. Since this eliminates the need to run separate power lines, PoE saves money in materials and installation time.... Read more
