PoE or Power over Ethernet is a technology wherein both electricity and data are transmitted over a same cable through separate lines. So, cables here perform a dual function of data and power transmission over the network. There are various PoE devices, such as PoE injectors, PoE switches, PoE media converters, PoE injectors, and PoE splitters, which are installed especially in blended networks such as copper and fiber ones. All these devices perform specific roles, and must be chosen according to the requirement.

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