what is poe

POE stands for Power over Ethernet, which is a technology that allows electrical power to be transmitted along with data on twisted-pair Ethernet cabling. This means that a single cable can provide both power and data to a device, eliminating the need for separate power supplies and outlets. POE is commonly used to power devices such as wireless access points, IP security cameras, and VoIP phones. The technology has several benefits, including lower costs, improved safety, simplified installation, and scalability. POE standards have evolved over time, with the latest IEEE 802.3bt standard supporting devices that require as much as 90 to 100 W of power.