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PoE injectorA device that adds power to an Ethernet cable for Power Over Ethernet (PoE) equipment. Although Ethernet switches are available with PoE capability, millions of regular "non-PoE" switches are already installed. See PoE.
|The injector plugs into an electric outlet and adds power to the Ethernet cable. In this example (bottom), it enabled an access point to be installed on the ceiling of a home without requiring a power outlet nearby.|