Can a hEX PoE power an Audience?

RouterOS General
1

Just wanted to double check this fact but I suppose it can given the fact that I’m using the correct power brick (POW-48). Looking at the specs pages:

hEX PoE:
https://mikrotik.com/product/RB960PGS

Audience:
https://mikrotik.com/product/audience

An Audience can draw a max of 27 W and a hEX can supply up to 54 W.

Am I right?

Thanks in advance!

2

Unfortunately, there is another point in the hEX PoE specs: maximum current per output port is 0.45 A for voltages above 30 V. 48 V times 0.45 A gives just 21.6 W. Even with the maximum voltage of 57 V, you’d still get just 25.65 W.

3

Thanks for the input. That does seem worrisome.

EDIT: would the changing the 48-POW with the MT48-570080-11DG be a possible solution?

4

Strictly speaking no, as I wrote above - with 57 V and 0.45 A, you still get just 25.65 W (plus there is some voltage drop-down as the power goes from the input to the PoE output, so you’ll have a bit less than 57 V on the PoE output of the hEX even if there is 57 V on the power input of the hEX).

But experience says that the devices actually drain less power than the datasheet states, so you may give it a try at your own risk.

5

The MT48-570080-11DG does run with 0.8 A, so 57 v times 0.8 A equals 45,6 or am I again wrong here? I think your experience is correct as well :slight_smile:

6

You are correct that the MT48-570080-11DG has enough power to feed the Audience directly, but the limiting factor is that the hEX PoE can only let through 0.45 A per interface.

7

A result of not following/using standards for functionality.

8

Understood, thanks all for the help!!

9

Just wanted to update anyone who finds this topic, an Audience can be powered by a hEX if used in a home environment.
Don’t think 100 clients etc…