PoE

What is PoE

　PoE is an abbreviation of "Power over Ethernet", and is a technology standardized as IEEE802.3af in June 2003. PoE can supply power using UTP cables (category 5 or higher) used for wiring in Ethernet. I can do it.

　Since the UTP cable can be used as a power supply, data communication and power supply can be performed with one cable. As a result, equipment can be installed in locations where it is difficult to obtain a power supply, and wiring can be reduced because there is no need to route power cables.

　If you have to install an AC adapter, it will take up space, but if you can get power from UTP, the power supply area will be neat. In addition, costs such as construction costs associated with the addition of power outlets can be reduced.

PoE is especially useful when installing IP phones and network cameras.

　There are two methods, TypeA and TypeB. TypeA shares the same 4 copper wires for data transmission and power supply. In TypeB, 4 wires that are not used in 10BASE-T/100BASE-TX are used for power supply.