-48V and AC power supplies in the same router?

Hardware MikroTik hardware general
1

Is the combination of a -48V power supply (PW48V-12V85W) and an AC power supply a supported configuration? CCR2116 is my likely target.

2

It show’s that combination in the brochure, and even mentions that specific combination in the product description. Did you try it and are having problems?

3

The PW48V-12V85W work regardless - or + 48V
The + or - on voltage do not mean to “cross” the DC cables to power the device, but:
-48V = positive on the chassis/ground
48V = is supposed +48V but better know if is one error…
+48V = negative on the chassis/ground

I have the same configuration, also mixed on the same rack devices with “-” and “+”, and all work as expected, without short-circuits,
because both the AC and DC power sources are galvanically isolated

but better do some test woth your other equipments before do any…

4

Exactly what I need to know... again. Thanks!

5

I didn’t, I missed that in the description somehow… “Simply remove one of the current power supplies…”; implying that mixing them is ok.

I have some brands where this is explicitly not supported and needed to be sure, I want to keep the magic smoke where it belongs.

Thanks!