Can RB260GSP power RB750G via PoE?

I’ve zero to none experience with PoE so I would appreciate some assistans to figure this out.

I think that the RB750G uses 100Mbit mode B, power only on pins 4,5,7,8. From what I can see on the Wikipedia page on PoE, it looks like 100Mbit mode B and 1000Gbit mode B at least regarding to power could work. I don’t know which implementation the RB260GPS has, but i’ve tested auto negotiation and force 100Mbit on both devices with out success.

Are the standards compatible? I’ve read that in some cases a custom cable can be made, not sure if this is the case here, any ideas?

It should. Both of them use passive PoE - a not exactly standard thing.

Here is the product page:
https://mikrotik.com/product/RB750G

Power by passive PoE is used by Mikrotik in almost all its products - just a few of them don’t support it.

This is how far I’ve come.

When “PoE Out” is auto on the RB260GSP status stays at “waiting for load”.

When I change it to on it states “powerd on”. Current and power is about 85mA/2W which I guess is about right. Looking at the RB750G the power LED is green but none of the link LEDs, and I don’t get link on any port. Don’t know where to go form here since I can’t connect. Feels like it’s not fully booted. I don’t have that behavior when it’s powered with the adapter.

You should only switch PoE out to “on” if You are REALLY sure the other side supports it. With “auto” the device tests, to see if the other side can handle PoE, and only put power on the wire if yes. With the option “on” it powers up the wires, and that’s it.

That said.

  1. This switch changes the color of the port, when using PoE: it turns orange/red (not sure).
  2. It only outputs PoE on ports 2 to 5. Port 1 is PoE in only.
  3. RB750G should accept passive PoE on port 1.

Here is the switch page:
https://mikrotik.com/product/RB260GSP

You don’t need to force negotiation to 100Mbit. Let it on “auto”, since both of them are gigabit devices.

I have one RB260GSP powering one hEX and one hAP ac lite. The hEX is gigabit, and works quite happily with the PoE provided.