PoE splitters (Power over Ethernet) divide power and data and convert the PoE source into a regulated DC power source. Most devices are already PoE equipped as standard as they contain circuitry that splits off the power from the Ethernet cable. If you have a device that is not PoE equipped you can use a PoE splitter. The splitter splits off the power and the data which can then be connected to your device. Most PoE splitters will work with network devices that have a supply voltage between 5V and 12V DC when used with a PoE injector.