Connect non-PoE to Passive PoE output of cap ac?

Hardware MikroTik hardware general
1

Dear all,

although it was planned differently, it might happen that I can use only one ethernet cable to connect all appliances of one room to the network. The gear is partly PoE and non-PoE capable.

This means I would have one ethernet cat7 cable coming from an externally located, PoE capable router (hp ac3) to this room; in this room this cable would connect and power a cap ac (which is PoE capable). I would use the cap ac’s 2nd ethernet output (which has passive PoE only) as wired ethernet connection for the other networking gear in this room, which is not PoE powered.

Unfortunately, I cannot find any information whether this could be harmful?

As I understand it the cap ac’s 2nd ethernet connection is also always powered if the first PoE-In ethernet port is powered. As the specs say the 2nd ethernet port is passively powered, I understand that as dumb powering, so there is no check if the gear connected to the 2nd port is even PoE capable?

Would I risc damage to standard, non-PoE network gear when connecting it to this 2nd port (which is passive PoE powered)?

Thanks for your help!

Hannes

2

My impression has solidified that the 2nd ethernet port of the cap ac is mostly intended for daisy-chaining other caps - which makes perfect sense - but not for other non-PoE gear.

This should be clearly mentioned in the user manual!

3

You can use any PoE-out port on any of Mikrotik devices (except for PoE injectors) to connect a non-PoE device without any risk.
If you don’t manually put such port to poe-out=forced-on, but leave it on auto-on or off the power won’t be applied to it.

And it’s clearly mentioned in the manual:
https://wiki.mikrotik.com/wiki/Manual:PoE-Out#PoE-Out_Modes
https://wiki.mikrotik.com/wiki/Manual:PoE-Out#PoE-Out_compatibility_detection

4

That’s cool - many thanks for your reply and the links!

So I misunderstood the term “Passive PoE” then!