Help with RGB Fans


Standard Member
I am building a new PC which comes with RGB fans that I am not familiar with.

Here are the components of the build

Case : Cougar MX660 Mesh case with preinstalled RGB fans and controller
Motherboard : Gigabyte B550 Aorus Elite V2
CPU : AMD Ryzen 7 5800X Processor
GPU : Zotac Geforce RTX 3070 Ti
PSU : Msi A850GF
Cooler : BeQuiet! Dark Rock Pro 4
Storage : Crucial P5 Plus 500 GB PCIe M.2

The Fans have the standard 3 pin cable for connecting to the SYS_FAN on the motherboard but also a cable to go to the controller. I connected all three to the controller and there is a cable from that that I have connected to the LED Strip header on the MB and another to the Sata for power. I would have though this would provide the power for both lighting them up and to spin the fans. When I fired up the PC, the lights go on but the fans don't spin. Was I therefore supposed to connect the other cables too?


  • 20220313_122902.jpg
    183.4 KB · Views: 13
  • 20220313_122831.jpg
    295.3 KB · Views: 11
  • 20220313_122952.jpg
    236.2 KB · Views: 11
  • 20220313_122916.jpg
    210.7 KB · Views: 13


Active Member
Yes 100% the cables you have connected are all rgb cables, the other cables have to connect to fan outputs on the motherboard.


Standard Member
Thankyou. I just clicked that the circuit board just allowed more of the RGB cables from one RGB header on the motherboard. So the Sata power just gives them more power.

I was actually thinking of replacing the other three plain fans with the same or similar RGB ones that are at the front. I could use the other three slots on the other side. I have ordered two splitters for the 4 Pin header allowing three fans into one.

Can you suggest similar fans that might be compatible with them. I did have a look but a lot of them come with their own controller and different connection types so is a bit confusing.

Thanks again


Active Member
This wee fan hub is cheap and I've found they are pretty good not had one fail yet, might be worth getting one. Runs 4 fans from one motherboard header.

VANDESAIL PWM Fan Hub 4pin 3pin Fan Splitter CPU Black Sleeved Braided cooling 4 Way Fan Power Cable 15 Inch for 12V Computer Fans Amazon product

The latest video from AVForums

Samsung S95B Update, B&W Panorama 3 & Q Acoustics Reviews, HDR PQ EOTF/Gamma Calibration Discussion
Subscribe to our YouTube channel
Support AVForums with Patreon

Top Bottom