The power extracted by the splitter is often used to power the device using a separate power input.ĭevices that are designed to meet any of the standards have built in power management. PoE Splitter – This Splits the data from the power and is used to connect a non PoE end device to PoE source. The legacy switch cannot provide the power so the injector does. PoE Injector – These are used to connect a PoE end device to a non PoE device like a legacy switch. Typical devices are cameras and Wireless access points. PDs must work in both Alternative A and Alternative B modes. Powered Devices ( PD) – These consume power provided by PSEs. You should notice in the screen shot that it clearly states that it supports PoE. Power Source equipment ( PSE) supplies power to end devices.
These two spare pairs can be used for carrying DC power. On early Ethernet networks operating using 10base T and 100base TX only 2 pairs were used for carrying data and the other two were spare. It is used for connecting remote devices that don’t have a convenient local power source like IP cameras, VOIP phones etc.Įthernet cable (CAT 5,6 &7) uses 4 twisted pairs. Power over Ethernet allows an Ethernet cable to carry DC power as well as data signals to attached devices.