MikroTik Low-cost passive PoE base unit for powering passive PoE devices over Ethernet. Simply connect your power source to the injector, and then use an Ethernet cable to connect the injector to the RouterBOARD device. Helps reduce the number of wires that lead up the tower. Spare pairs are used to power and communicate with 10/100 Mbps devices. Use with any RouterBOARD that supports 9-48V PoE. Takes a standard 2.1mm DC plug.
For using with RouterBOARDs that support 10-28V PoE powering, input needs to be at least 18V to accommodate any losses in cables.