Power over Ethernet (PoE)

Using PoE (Power over Ethernet), network cables can supply devices with data and power via an existing data connection. PoE is particularly advantageous where the installation of power lines is too cumbersome or expensive, since only one PoE cable is required to connect PoE-enabled devices. Devices that are PoE-capable are so-called PSE devices (Power Sourcing Equipment) or PD devices (Powered Device). PSE devices such as network switches or PoE adapters for use with non-PoE switches transmit power. PD devices such as VoIP phones, WLAN access points and static IP surveillance cameras, on the other hand, only use electricity. Certain standards must also be observed for the Power-over-Ethernet transmission of data or power.