The Gigabit PoE (10/100/1000 Mbps) adapter for powering Mikrotik’s RouterBOARD and any other PoE powered devices. Simply connect your power source and then use an ethernet cable to connect the injector to the device. Helps reducing number of wires that lead up the tower. Power over pins 4 and 5 is used to power and communicate with 10/100/1000 Mbps devices. For using with any devices powered 9-48V over 10/100/1000Mbps ethernet cable.