![I bought a Y splitter for my fans and one header is missing the third pin. Can I plug my 3-pin fan header into only the left two pins? : r/buildapc I bought a Y splitter for my fans and one header is missing the third pin. Can I plug my 3-pin fan header into only the left two pins? : r/buildapc](https://i.imgur.com/JDKZiGV.jpg)
I bought a Y splitter for my fans and one header is missing the third pin. Can I plug my 3-pin fan header into only the left two pins? : r/buildapc
![Enlabs PCIFANCO8MPR 8 Channel 3-pin 4pin Fan speed Controller w/ OFF Switch - 8 Fans RPM Speed Reduce Regulator by 4 Knobs w/ PCI Slot Cover - Molex 4pin to 8 Port Enlabs PCIFANCO8MPR 8 Channel 3-pin 4pin Fan speed Controller w/ OFF Switch - 8 Fans RPM Speed Reduce Regulator by 4 Knobs w/ PCI Slot Cover - Molex 4pin to 8 Port](https://c1.neweggimages.com/ProductImageCompressAll1280/ACJF_132173483759438871bINa4TrGEr.jpg)
Enlabs PCIFANCO8MPR 8 Channel 3-pin 4pin Fan speed Controller w/ OFF Switch - 8 Fans RPM Speed Reduce Regulator by 4 Knobs w/ PCI Slot Cover - Molex 4pin to 8 Port
![Pccooler Sc01 Pc Cpu Fan Speed Controller 12v Reducing Noise For 3 Pin Fan Speed Control 3 Level Adjustment 100% 85% 70% - Fans & Cooling - AliExpress Pccooler Sc01 Pc Cpu Fan Speed Controller 12v Reducing Noise For 3 Pin Fan Speed Control 3 Level Adjustment 100% 85% 70% - Fans & Cooling - AliExpress](https://ae01.alicdn.com/kf/HTB1Zn7KIVXXXXbUXFXXq6xXFXXXo/PcCooler-SC01-PC-CPU-Fan-Speed-Controller-12V-Reducing-Noise-For-3-pin-fan-Speed-Control.jpg_.webp)
Pccooler Sc01 Pc Cpu Fan Speed Controller 12v Reducing Noise For 3 Pin Fan Speed Control 3 Level Adjustment 100% 85% 70% - Fans & Cooling - AliExpress
![Amazon.com: Manual 12V DC Variable Speed Controller 4 pin Molex to Dual 3 pin Connector : Electronics Amazon.com: Manual 12V DC Variable Speed Controller 4 pin Molex to Dual 3 pin Connector : Electronics](https://m.media-amazon.com/images/I/31bsa4T6YRL._AC_UF1000,1000_QL80_.jpg)
Amazon.com: Manual 12V DC Variable Speed Controller 4 pin Molex to Dual 3 pin Connector : Electronics
![3-pin CPU fan always at 100% (due to PWM only mode), should I connect it to SYS_FAN (Voltage mode)? : r/buildapc 3-pin CPU fan always at 100% (due to PWM only mode), should I connect it to SYS_FAN (Voltage mode)? : r/buildapc](http://i.imgur.com/mVb4lTy.jpg)
3-pin CPU fan always at 100% (due to PWM only mode), should I connect it to SYS_FAN (Voltage mode)? : r/buildapc
![mosfet - How can I adapt a 3-pin PC fan connector to a 4-pin connector? - Electrical Engineering Stack Exchange mosfet - How can I adapt a 3-pin PC fan connector to a 4-pin connector? - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/jcBeR.png)