PoE Definition and Three Standards: IEEE 802.3af, IEEE 802.3at, IEEE 802.3bt
PoE (Power over Ethernet) is a technology that allows data to be transmitted over Ethernet cables while simultaneously supplying power to connected devices. Traditionally, network devices (such as IP cameras, wireless access points, IP phones, etc.) required independent power supplies, which could lead to complex wiring, high costs, and dependence on power outlets. The advent of PoE technology has solved these problems, providing greater flexibility and convenience for the deployment of network devices.
