It complies with IEEE 802. up to 30W up to 30W up to 30W up to 30W. PoE Protocal 802.3af/at 802.3af/at Passive 48V PoE Passive 48V PoE. Unique Design PoE+ Injectorfrom BV TECH PoE+ Injector. ✭Up to 30W of power over ethernet | IEEE 802.3at (IEEE 802.3af backwards-compatible) / end-span.