Power over Ethernet (PoE)

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Power over Ethernet is a networking feature that lets network cables carry electrical power over an existing data connection with a single Cat5e/Cat6 ethernet cable. Power over Ethernet (PoE) allows for installation of remote or outside equipment without having to connect to AC power. This allows power to be delivered to more areas without the need to install additional electrical infrastructure or to have power outlets at every endpoint. The limitations of PoE are few but should be taken into account when adopting for the first time:

  • Simple PoE only transmits signals 100m;
  • Non-compliant devices require additional equipment
  • Power budgets may only achieve levels available on legacy equipment.
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