Hi, I have a EVGA PSU. A 750 watt 80+ gold Supernova G3.
 
My apologies if this is submitted in the wrong place but I have done some research and there's not much information out there on this particular issue on the corsair forums besides some people saying oh maybe it's something to do with the PSU.
 
I've built my PC over a year ago with barely any RGB in it and now recently I've ordered 6 Corsair LL120 with a commander pro and an rgb hub.
 
I set up the RGB hub with the 6 rgb fan pins in it, a rgb header (this cable came with the commander pro) connecting to the Commander pro (I have used the Commander pro before hand while waiting for the RGB hub to come and the fans worked fine, they spin but just no RGB). The problem is when I turn on the PC the wires for the RGB hub and the rgb header shorted out and there's alot of smoke. The wires were melted basically. I can send photos on request.
 
I have returned the RGB hub and got a new one, to make sure that it wasn't a faulty RGB hub, and the same thing happened again.
 
I have no idea what the solution is and I kinda refuse to take my PC apart to read the serial number on the PSU to register to ask tech support.
 
If anyone has experienced this issue and figured out a solution or know what the problem is, please help me out.
 
Thanks for reading

My full build is
i7-9700
1080Ti gigabyte
MSI z390 Gaming pro carbon
32gb ram corsair vengeance ddr4 3200mhz
500gb m.2 western digital
2tb ssd (I think it's a samsung evo)
corsair carbide 275r black
Corsair hydro H150i
used to have 5 ezdiy 120 fans with 1 corsair that came with the aio since the clearance wasn't good enough to fit all 3
now have 6 corsair ll120 plus the 1 corsair that came with the aio (managed to find more room to fit another fan lol) instead with a commander pro controlling 4 of the fans and aio controlling 3 fans
EVGA SuperNOVA 750 G3 80 Plus Gold 750W fully modular
I built this PC in september 2019 from scratch
 

xSunnyy
^ bump

Im sorry man, i dont have too much more to add at this point really. For 2 of the same hubs to do the same thing means either its the install or its the way the units are hooking up to your rig. Maybe the wiring pinouts need to be switched in the plug cause they have them opposite of your setup. Ive seen that a few times over the years.

definitely something wrong somewhere , if two burnt out  in exact same rig....  I guess only way to test would be to use a different rgb hub brand & see if a different company version does the same thing ...?

Sounds like a connection between Hot & Ground somewhere in your circuit (short)
 
Not all RGB is compatible - some is 5V & some is 12V - they Can be wired differently also (location of Ground, Hot & color control are located)
 
List the part number of the RGB hardware, fans .....  all listed by the Mfg as compatible ?
 
Where is the RGB power from the "commander pro" or the Hub ?
 
Check the PSU plug with a standard voltmeter ... using SATA power ? 
 
The output (device side) of any PSU wire should conform to the standards. 
 
https://pinoutguide.com/P...ata-power_pinout.shtml
 
https://pinouts.ru/Power/BigPower_pinout.shtml
 
https://pinouts.ru/Power/
 
 
 
 
The PSU side of the wires is custom to that PSU model - Never mix wires between PSUs without checking compatibility First

A PSU can't cause a component to short out.  A "short" is a physical thing.  It indicates is a physical mechanical problem with the component itself.  If you have tried multiple components of the same brand and model, perhaps you should try a different brand or model of RGB hub.

The Commander Pro connects to power and also to a USB port on the motherboard. The Commander Pro then gives you two USB ports to use. 
 

Sorry I forgot about this thread,
Response to rjohnson11: yeah I'm pretty sure I connected the rgb fans to the rgb hub 1 to 6 filled all of the slots for it with the rgb labeled pins. The rgb hub and the commander Pro are indeed connected to each other with the rgb header cable that came with the commander Pro and both are powered by sata

Response to bob16314: currently I have returned both of rgb hub to amazon and still have the commander Pro, so the fans does spin since its controlled by that (with 3 fans for the aio connected to the aio header separately) and no problems so far and it's been about over a week maybe since I've set it up like this. Just no rgb lights D:
Also the rgb hub is by corsair, the commander Pro is corsair and the fans are corsair

Some people are saying it may be a short, how do I check for a short? (without finding it out the hard way lol)