The RGB Case Fan (Powerspec G434) with Lian Li label on the back of the PC is going out.

MikeB54 · April 2

The back case fan is going out. It is randomly slowing down, making noise as it slows down.

I tried finding a replacement fan on Amazon and struck out 2 times. It appears the case fans use all 4 pins for both power and the RGB function. The only ones I found online that specifically said they were PWM RGB LED 12V and FAN 12V only use 3 pins of the 4 for the LED. The 3rd pin is blocked, yet on my motherboard, all 4 male pins are present and the current fans show all 4 female pins open.

SO, where do I get actual replacements for these 2 fans used in this case?

Thanks for any help you can offer.

PowerSpec_MikeW · 12:12PM

@MikeB54

You can use the 3 pin fan, the header is keyed. However, a 4 pin fan is a PWM fan. For the RGB the 4 pin is RGB, the 3 pin is ARGB. Link what you're looking at and I'll check it out.

MikeB54 · 5:53PM

The header on the motherboard is definitely the 4-pin RGB. The Power cable and RGB cables from the fan are both 4-pin. It appears from the 4-pin connector that is plugged into the RGB port (to the right of the open 3 pin ARGB header) that they used a combined connector that comes from both rear case fans. You can see from the video how the lower fan is really dragging. I pulled it out and used compressed air on it to see if dust was blocking the fan. After running at normal speed for about 5 minutes, it just slowed back down. I very much appreciate your help. If you need further information, please let me know.

System: Powerspec G434