POE (imbaraga hejuru ya Ethernet) bivuga tekinoroji yo guhererekanya ingufu binyuze mumurongo. Hifashishijwe Ethernet ihari, irashobora kohereza icyarimwe amakuru no gutanga ingufu kubikoresho bya IP terminal (nka terefone ya IP, AP, kamera ya IP, nibindi) binyuze mumurongo wa net.

Poe izwi kandi nk'imbaraga kuri LAN (POL) cyangwa Ethernet ikora, rimwe na rimwe bita amashanyarazi ya Ethernet.

Mu rwego rwo guhuza no guteza imbere iterambere ry’ikoranabuhanga rya Poe no gukemura ikibazo cyo guhuza n’imihindagurikire y’amashanyarazi n’ibikoresho byakira amashanyarazi biva mu nganda zitandukanye, komite ishinzwe ubuziranenge bwa IEEE yagiye itanga amahame atatu ya Poe: IEEE 802.3af, IEEE 802.3at na IEEE 802.3bt bisanzwe.