Power over Ethernet (PoE) is rapidly advancing as an intuitive technology for network infrastructures seeking cost savings, power management, and network reliability. Power over Ethernet (PoE) is rapidly advancing as an intuitive technology for network infrastructures seeking cost savings, power management, and network reliability. Whether you are installing new or using existing Ethernet wiring systems to send data and power to devices, PoE offers an exciting, cost-effective advancement to expand the capabilities of your network infrastructure.