Knowledge of these POE must be understood!

Ethernet power refers to the ability to provide 48V DC power supply in the same Ethernet cable. The implementation of Ethernet power supply needs two kinds of main equipment, power supply equipment (PSE), namely LAN switch power source or Ethernet, and electrical equipment (PD), which is received from the Ethernet cable and the use of power to run the terminal equipment.

The advantages of PoE: in addition to providing general power support from the Ethernet cable to connect devices, PoE reduces investment spending, thereby reducing the integration of the IP device into the headquarters of the United States on the basis of the cost of equipment. PoE eliminates the need to install a wall power connection for the terminal device, thereby reducing the cost of the socket associated with the support of the terminal device. It also provides a greater flexibility to install network connectivity devices in a more difficult place to deploy local AC power.

PoE switch: PoE switch port in the transmission of data signals at the same time, but also for some IP based terminal (wireless access point AP, VoIP phone and IP based surveillance cameras) to provide DC power supply. Using a standard CAT5 cable, you can provide power for wireless AP and IP cameras. Ethernet power supply (PoE) optimized Device (Power) installation and power management, reducing the installation time and cost for many new network devices.