Hi friends,
I just bought this product:
https://www.ekwb.com/shop/ek-cable-splitter-4-fan-pwm-extended
to combine and control 3 of these PWM fans:
https://www.bitfenix.com/products/fan/spectre-led-pwm/
As per title, the fans run at full speed no matter my bios settings, they sit well over 1400 rpm all the time and fluctuate up to 1500s.
This splitter uses a molex connector to feed power,while the 4-pin pwm connector has actually only two wires (the 4th and the 3rd) which should be PWM control and Sensor respectively.
My motherboard (asus p8z77 v le plus) describes the 4-pin layout like this: (starting from 4th pin) CHA FAN PWM, CHA FAN IN, CHA FAN PWR, GND).
1st and 2nd pins are empty and all the power comes from the molex bypass.
The 4 pwm male cables that connect to the fans' female are not all the same. One of them has 4 pins in order to recieve signal from one of the fans, while the rest 3 are actually 3 pin so they all integrate for sending a single signal and they should run at the same speed obviously based on the pwm control of the mobo.
It simply doesn't work, and honestly i have not understood how the pwm control works since the power comes from the MOLEX. I tried to use a different header but same results.
I also tried using a single fan to the header without the splitter and worked great, so the header and the fans are not an issue.
Any ideas? My pc is literally like a turbo engine sitting right next to me :lol:
I just bought this product:
https://www.ekwb.com/shop/ek-cable-splitter-4-fan-pwm-extended
to combine and control 3 of these PWM fans:
https://www.bitfenix.com/products/fan/spectre-led-pwm/
As per title, the fans run at full speed no matter my bios settings, they sit well over 1400 rpm all the time and fluctuate up to 1500s.
This splitter uses a molex connector to feed power,while the 4-pin pwm connector has actually only two wires (the 4th and the 3rd) which should be PWM control and Sensor respectively.
My motherboard (asus p8z77 v le plus) describes the 4-pin layout like this: (starting from 4th pin) CHA FAN PWM, CHA FAN IN, CHA FAN PWR, GND).
1st and 2nd pins are empty and all the power comes from the molex bypass.
The 4 pwm male cables that connect to the fans' female are not all the same. One of them has 4 pins in order to recieve signal from one of the fans, while the rest 3 are actually 3 pin so they all integrate for sending a single signal and they should run at the same speed obviously based on the pwm control of the mobo.
It simply doesn't work, and honestly i have not understood how the pwm control works since the power comes from the MOLEX. I tried to use a different header but same results.
I also tried using a single fan to the header without the splitter and worked great, so the header and the fans are not an issue.
Any ideas? My pc is literally like a turbo engine sitting right next to me :lol: