Hey
I just wanted to inform you about an incident, which happened here recently.
Setup is Switch<->Mikrotik PoE Injector<->NRAY Dish
The cable between the Injector and the Dish got damaged. After that the dish NIC was broken. I suppose the 24V got in contact with a data line. Being curious, I have opened the (now broken) NRAY Dish and could not find any transformers in the RJ45 Jack so I suppose the NIC saw the 24V.
@Mikrotik: You might want to consider this in future product designs.