Mahimmin mahimmin ɓoyayyiyar alamar maɓalli na POE shine jimlar ƙarfin da POE ke bayarwa.A karkashin ma'aunin IEEE802.3af, idan jimillar wutar lantarki ta POE mai tashar POE mai tashar jiragen ruwa 24 ta kai 370W, to tana iya samar da tashoshin jiragen ruwa 24 (370/15.4=24), amma idan tashar guda ce bisa ga IEEE802.3at. misali, matsakaicin ƙarfin wutar lantarki ana ƙididdigewa a 30W, kuma yana iya ba da wutar lantarki zuwa tashoshin 12 kawai a lokaci guda (370/30=12).

Koyaya, a zahirin amfani, matsakaicin yawan wutar lantarki na na'urori marasa ƙarfi da yawa ba su da ƙarancin ƙarfi.Misali, ikon APs-mita-ɗaya shine 6 ~ 8W.Idan kowane tashar jiragen ruwa na POE ya tanadi samar da wutar lantarki bisa ga mafi girman wutar lantarki a wannan lokacin, zai bayyana ikon POE na wasu tashoshin jiragen ruwa ba za a iya amfani da shi ba, yayin da ba za a iya raba ikon wasu tashoshin jiragen ruwa ba.Yawancin POE masu sauyawa suna goyan bayan Ƙarfin Ƙarfin Ƙarfi (DPA).Ta wannan hanyar, kowace tashar jiragen ruwa kawai ke ba da ikon da ake amfani da ita kawai, ta yadda wutar da POE ke bayarwa za a iya amfani da ita sosai.

Bari mu yi zato, idan muka yi amfani da 24-tashar POE canjiSaukewa: JHA-P420024BTHda nau'in panel guda-band JHA-MB2150X.Muna ɗauka cewa ikon POE na JHA-P420024BTH shine 185W (Lura: ikon 24-tashar POE sauya JHA-P420024BTH shine 380W).Ana amfani da tashoshin jiragen ruwa 12, kuma bayan an karɓi rarraba wutar lantarki mai ƙarfi, saboda matsakaicin ƙarfin wutar lantarki na JHA-MB2150X shine 7W, JHA-P420024BTH na iya ba da wutar lantarki 24 na JHA-MB2150X (185/7=26.4).