What is the primary function of "Power over Ethernet"?

The primary function of "Power over Ethernet" (PoE) is to transmit electrical power along with data over the same Ethernet cable. This technology allows network cables to carry both power and data to devices such as IP cameras, VoIP phones, and wireless access points. This dual capability simplifies wiring, reduces installation costs, and increases flexibility since devices can be installed in locations without the need for separate power sources.

By enabling a single cable to serve both purposes, PoE is particularly advantageous in environments where power outlets are limited or where the installation of electrical wiring would be costly or impractical. This functionality is crucial for supporting a wide range of devices, particularly those that are deployed in hard-to-reach areas or outdoors.