Power over Ethernet (PoE) is a technology that allows network cables to carry electrical power along with data to remote devices. This dual-purpose system eliminates the need for separate power cables, simplifying installation and reducing cable clutter. The primary function of PoE is to deliver power to devices like IP cameras, VoIP phones, wireless access points, and other Ethernet-powered devices, directly through the network cables. It provides a versatile and flexible power solution that can be especially useful in hard-to-reach or power outlet-scarce locations.
In terms of its main uses, PoE is commonly employed in smart buildings, offices, and homes, powering devices effectively where traditional power delivery would be challenging or costly. The characteristics that stand out include the convenience of powering devices through a single Ethernet cable, which can transmit data at the same time, and the fact that PoE adheres to standardized specifications, ensuring compatibility across devices and safety in power management. A few notable manufacturers that specialize in the production of PoE components include Cisco Systems, Broadcom Inc., and Microsemi Corporation.