Passive POE Injector

Mikrotik
Passive POE Injector with LED for use with RB/133, RB/133C, RB/150,
RB/192, RB/230, RB/333, RB/411, RB/411A, RB411AH, RB/433, RB/433AH,
RB/450, RB/493, RB/532, RB/532a, RB/600A. Use with a standard DC power
supply to provide POE on unused pairs. Takes standard 2.1mm DC plug.