These products step down either a passive 24 volt (WS-POE) or 24-56 volt active 802.3af (WT-AF) power supply to power Foscam 5 volt cameras, tablets, phones, Rasberry Pi's, or any other 5 volt device. The PoE splitter has a 1.35mm DC plug for Foscam 5 volt cameras, and we have adapters for other models. Some models split the power and data, and other supply only 5v to specialized connector including female USB, microUSB, and lightning connectors. We use 24 volts to insure low loss, then step the voltage down to 5 volts with a DC-DC convertor, splitting the power and data.