PLANET's newly-improved UPOE-800G, a high-density, rack-mountable managed and quick PoE++ solution, is designed to perfectly upgrade an existing network infrastructure to IEEE 802.3bt Power over Ethernet Plus Plus network system without replacing the existing Ethernet Switch. The UPOE-800G' management functions have been enhanced to include TLSv1.2 and TLSv1.3 protocols to improve cybersecurity, PLANET NMS system, PLANET CloudViewer app, PLANET DDNS/Easy DDNS service, and more. The UPOE-800G, a high-density, rack-mountable managed IEEE 802.3bt PoE++ injector hub, features PLANET intelligent PoE functions through web user interface for remote management. It provides 8 10/100/1000BASE-T Ethernet ports featuring 802.3bt type-4 PoE++ injector with a total PoE budget of 400 watts. Each PoE port can deliver up to 95-watt power over Cat.5/5e/6 Ethernet UTP cables which allow data and power to transmit simultaneously to a remote 802.3bt/at powered device (PD). The UPOE-800G enables centralization of the power supply and optimizes the installation and power management of remote network devices, and provides a quick, safe and effective Power over Ethernet network solution for small businesses and enterprises.