RB260GSP (CSS106-1G-4P-1S) PoE-In Amperage Limit

SwOS
1

Hello to everyone,

Based on https://help.mikrotik.com/docs/display/UM/RB260-series and on the comment


The maximum power output of each ethernet port in this mode is 1 A, total for all ports 2 A.

is it right to think that if I use PoE input to power the device, then I cannot have more than 1A to use for my PoE output ports?

If I power the device with a power adapter, I can understand the quote above, but I am not sure if the amperage limitation applies to the port in general (so input or output does not make any difference) or only when the port is used to supply a PD.

To sum up:

  • power adapter: max 2A


  • poe in : max 1A (without excluding the device itself)

Is that correct? :confused:

Thank you in advance.

2

PoE-Output :
The Mikrotik RB260GSP as 4 Interface with PoE-Out (Ether2, Ether3, Ether4 and Ether5)
Every single of these Ethernet-Interface is able to deliver up to 1A

So for Exemple :
12V x 1A = up to 12 Watts per Port
24V x 1A = up to 24 Watts per Port
30V x 1A = up to 30 Watts per Port

Important Notice 1:
If you have more then two PoE-Interfaces active,
you will need to make sure, that you don’t exceed 2A.

The 2A referrers to the combined PoE-Outputs (Ether2 thru Ether5)

Important Notice 2:
You can Power the Mikrotik RB260GSP via PoE and/or DC-Jack.
It make no difference for the Switch or the PoE-Outputs.

A. Just make sure the Voltage is the right one for all your devices.
B. Make sure your Power-Supply as enough amps (A) for everything.

For Exemple :
If you use a 24V / 2.5A Power-Supply
You will be able to power everything.

3

Thank you for your reply ConnyMercier.


You can Power the Mikrotik RB260GSP via PoE and/or DC-Jack.

This comment above is the one I want to elaborate on.

So if I use a PoE injector with a power supply 24V / 2.5A to PoE-In interface, should that PoE-In interface deliver 2A in total for the other four Ethernet ports?

With power supplied from jack, I agree with all that you have mentioned. But I was wondering if the 1A limitation is also applied to PoE-In with that resulting in less Watt in total for my PDs. :blush:

4

Jap , no difference between PoE and/or DC-Jack =)

5

Just in Case you are new to PoE,
Network-Cable Quality and Length are important Factors with PoE

So , don’t use a 100m Cable if you only need 2m
And if you do have long runs of cables (50m+), think of using the highest Voltage possible (like 28V instead of 24V).

6

Hello ConnyMercier,

Thank you for your replies.

Well, we never get old when it has to do with technology. Despite that, I am familiar with the practices you mention and it is useful advice. :smiley: