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Power Over Ethernet

Overview Of PoE – Power Over Ethernet Concepts and Devices List

by Ramesh Natarajan on January 23, 2009

RJ45 Ethernet Cable
Photo courtesy of Olivander

1. What is PoE – Power Over Ethernet?

Power over Ethernet (PoE) does exactly what it says — it carries power over ethernet cables. So, an ethernet cables caries both data and current together to operate devices like wi-fi access points. This is very helpful to install wi-fi access points in ceilings, where it is hard to find power outlets. Only smaller devices can be powered using the PoE, as it carries limited power over the ethernet.
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