Source: UNIFORE
Power over Ethernet is the abbreviation of PoE, it’s new technology to offer 48V DC power through a single Ethernet cable. The standard PoE system contains two main devices, one is Power sourcing equipment (PSE), which is LAN switch or passive power supply, the other one is Powered device (PD), which is the terminal device to receive power from cable and use it.
PoE technology enables devices receive power supply over single Ethernet cable, also reduced the budget for both equipment cost and installation. Utilizing PoE solution will eliminate the necessary to install wall power supply for terminal devices, which mean increased flexibility for installation, making it possible to install network connected devices in places where local power supply deploy is difficult.
PoE smart power management is a function provided by smart PoE switch, which can achieve the optimization and controlling of power supply. This feature can permit customer to manage power supply effectively which prevent problems of power overuse. This feature including it can predefine power distribution for each port, and reset electricity distribution for ports that do not have electricity, also offering prioritization function which can avoid power exhaust of PoE switch. Smart power supply management also call LAN switch automatically recognize connected devices, and manage power for each compatible connected devices. Smart power supply management is based on IEEE power classification features, it can can make sure the actual power demand of compatible PD devices, rather than only adopt power level.