Hi
does someone know if the socket on the attached picture could be used (or is maybe designed) to connect a secondary PSU?
Thanks!
- Mat
yes, other PSU can be used. Just note that PSUs have to provide different voltage, minimal delta should be no less than 1V, to be on the safe side you can go with 2V difference.
Thanks for your reply janisk!
Do you know if we can monitor the voltage of the second PSU via SNMP?
- Mat
you can monitor only active PSU. However if you have them with different rated voltages, then reading what voltage will give you what PSU you are using.
Well, the problem is that if the backup PSU fails, we will never know. Maybe you can put this on the “wishlist” of additional features of the CCR series. 
if you have configuration as i described where main PSU output is higher than backup, then when main PSU fail it will switch to backup one, that already should be an indication that things are going wrong. When both of them fail, router will be offline.
edit: we will look into PSU sensing.
I think you misunderstood me.
If the main PSU fails first, you will see a drop of the Voltage that’s true. But what if the backup PSU fails and the main PSU still works. That’s why sensing the backup PSU is needed too. Because you will not know that the backup PSU failed until the main PSU fails too.
Thank you very much!
\
- Mat
PSU with highest voltage will be used first. If PSU fails, other PSU will be used. At least PSUs used in our enclosures are of high quality and will not be damaged by idling without load, but connected to power.
Hello, I want to know secondary PSU can plug on ALL CCR series routers?
yes they all have secondary connector on the PCB. You can open the case and check what power connectors exactly your router has.
It would be nice to buy the CCR with 2 PSUs in the first place. With the CCR you’re moving into the data centers where this is standard.
Is this the same deal with RB450G, that also has 2 power connectors?
on RB450G it is differentl. You can use PoE and one of the connectors as both pext connectors are directly connected together.
+1
If I had a wish regarding the features of future CCRs, I would like to see that:
- Redundant, hot-swappable PSUs
- AC and DC PSU option
- hot-swappable fan tray with fan redundancy
- Power Plug retainer clips
- PSU Status via SNMP
That would make the CCR Series real carrier class routers.
if MT ake a psu nr2 option, and provide a hotswat option to this, the CCR would (after software upgrade that is consider as stable) be the best broadband router at marked today ( at a price the 90% smallest company could afford)
+1 for the post from SwissWISP … that and a paid support subscription are the only parts holding us back in using Mikrotiks more and in more critical areas.
+1, good idea!
Hi janisk,
I have ordered one CCR1036-12G-4S and I am currently waiting for delivery. I want to use the secondary PSU option, but can you tell me which should be the correct voltage and polarity for the additional PSU in order to work correctly (And to be a secondary PSU and not a primary one)?
Thanks and regards.
Booting up my CCR – It shows 24VDC under system>health… So I’m guessing it takes anything between 10 - 28VDC.
As for Polarity.. Breakout a multimeter and check the built in PS, unless you get an answer sooner.
It’d be nice if this information was published in the CCR’s user guide.
Bad ideea.
The price will rise from 1000$ (1500$ in my country) to 5000$. maybe more, who knows. 
I think :
- adding one power jack will rise the price to “CCR Series real carrier” up 1$ more so it’s not a very good ideea.
- Power Plug retainer clips - 5cm of metal wire is a very big investment
- hot-swappable fan tray with fan redundancy - OMG, 2 fans will cost 5-10$ more to an 1500$ product, are you nut?