What do you want to run via poe? How many poe ports? Is a poe injector also okay?
For now I only want to connect a camera. Im not sure what a POE injector does so I havent realy thought about it
The lowest power option depends on what you attach. With a poe injector you can use a dumb switch and a poe injector as an external device.
The poe injector has usually 3 connections: power and 2 ethernet jacks. One ethernet neck is for plain ethernet the other one has added poe. It loops through the data but adds power to one of the ports.
To determine the lowest power option or is useful to know your minimum specs. How many ports do you need in total? Do you need smart capabilities? Do you need or want morn than one poe port?