TheKusintha kwa PoEndi akusinthayomwe imathandizira magetsi ku chingwe cha netiweki. Poyerekeza ndi wambakusintha, malo olandirira mphamvu (monga AP, kamera ya digito, ndi zina zotero) sichiyenera kulumikizidwa ndi magetsi, ndipo kudalirika kwa netiweki yonse ndikwapamwamba.
Mwachidule za Power Over Ethernet (POE) POE (Power Over Ethernet) imatanthawuza kugwiritsa ntchito ma terminals a IP (monga matelefoni a IP, malo olowera opanda zingwe a LAN (APs, makamera a netiweki, ndi zina zambiri) atha kupereka ukadaulo wamagetsi wa DC pazinthu zotere. zipangizo potumiza zizindikiro za data Ukadaulo wa POE ukhoza kuwonetsetsa kuti maukonde omwe alipo akuyenda bwino ndikuwonetsetsa chitetezo cha ma cabling omwe alipo, kuchepetsa ndalama.
POE imadziwikanso ngati njira yopangira magetsi kutengera netiweki yapafupi (POL, Power over LAN) kapena Active Ethernet (Active Ethernet), nthawi zina amatchedwanso Power over Ethernet mwachidule. Uku ndiko kugwiritsa ntchito zingwe zotumizira za Efaneti zomwe zilipo kale kuti zitumize deta ndi mphamvu zamagetsi panthawi imodzimodzi Miyezo yaposachedwa ndi mafotokozedwe, ndikusunga kugwirizana ndi machitidwe ndi ogwiritsa ntchito a Efaneti omwe alipo. IEEE
Muyezo wa 802.3af ndi mulingo watsopano wozikidwa pa POE yamagetsi amagetsi a Ethernet. Imawonjezeranso miyezo yofananira yoperekera mphamvu mwachindunji kudzera pa chingwe cha netiweki pamaziko a IEEE802.3. Ndiwowonjezera muyeso wa Ethernet womwe ulipo komanso mulingo woyamba wogawa mphamvu padziko lonse lapansi. muyezo.
IEEE idayamba kupanga mulingo mu 1999, ndipo mavenda oyambilira omwe adatenga nawo gawo anali 3Com, Intel, PowerDsine, Nortel, Mitel, ndi National Semiconductor. Komabe, zofooka za muyezo uwu zakhala zikulepheretsa kukula kwa msika. Mpaka June 2003, IEEE idavomereza muyezo wa 802.3af, womwe umafotokoza momveka bwino za kuzindikira ndi kuwongolera mphamvu pamakina akutali, ndikulumikiza.ma routers, masiwichi, ndi ma hubs opita ku mafoni a IP, machitidwe achitetezo, ndi malo olowera opanda zingwe a LAN kudzera pa zingwe za Efaneti. Njira yamagetsi yamagetsi imayendetsedwa. Kukula kwa IEEE802.3af kumaphatikizapo kuyesetsa kwa akatswiri ambiri amakampani, zomwe zimalolanso kuti muyezo uyesedwe m'mbali zonse.
