Ubiquiti 802.3af Supported PoE Injector Ubiquiti PoE Adapters provide a variety of features to help protect your PoE devices: Surge protection Clamping protection Maximum surge discharge Peak pulse current 48VDC @ 0.32A Electrostatic discharge (ESD) is the leading cause for outdoor device failures. You can effectively protect against ESD damage using a grounded Ubiquiti PoE Adapter, TOUGHCableTM, and TOUGHCable Connectors.