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Case fan problems

Onepoundlion
By Onepoundlion
in Cooling
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Hi, guys, I'm building my first own PC, I got these 3 pin case fan connectors, but the MB only have 4 Pin fan slot, can 3 pin fan connect to 4 pin?

 

This is my first ever PC build, I have a lot of unknowns, so please help 

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Yes. In computers, most of the connecters will only fit where they are supposed to go. The 3 pin fans work perfectly with a 4 pin slot. 

Intel HEDT and Server platform enthusiasts: Intel HEDT Xeon/i7 Megathread 

 

Main PC 

CPU: i9 7980XE @4.5GHz/1.22v/-2 AVX offset 

Cooler: EKWB Supremacy Block - custom loop w/360mm +280mm rads 

Motherboard: EVGA X299 Dark 

RAM:4x8GB HyperX Predator DDR4 @3200Mhz CL16 

GPU: Nvidia FE 2060 Super/Corsair HydroX 2070 FE block 

Storage:  1TB MP34 + 1TB 970 Evo + 500GB Atom30 + 250GB 960 Evo 

Optical Drives: LG WH14NS40 

PSU: EVGA 1600W T2 

Case & Fans: Corsair 750D Airflow - 3x Noctua iPPC NF-F12 + 4x Noctua iPPC NF-A14 PWM 

OS: Windows 11

 

Display: LG 27UK650-W (4K 60Hz IPS panel)

Mouse: EVGA X17

Keyboard: Corsair K55 RGB

 

Mobile/Work Devices: 2020 M1 MacBook Air (work computer) - iPhone 13 Pro Max - Apple Watch S3

 

Other Misc Devices: iPod Video (Gen 5.5E, 128GB SD card swap, running Rockbox), Nintendo Switch

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Just now, Zando Bob said:

Yes. In computers, most of the connecters will only fit where they are supposed to go. The 3 pin fans work perfectly with a 4 pin slot. 

So I just simply plug it in and leave 2 pin left?

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Yup. I did it with my case fans (one is LED) on my Corsair Spec-02 case, and they work fine. If you watch Linus's old build guides, somewhere in there he tells you that it doesn't matter, both 3 and 4 pin fans work with 4 pin headers. But there should only be one pin sticking out after connecting a 3 pin fan.

Intel HEDT and Server platform enthusiasts: Intel HEDT Xeon/i7 Megathread 

 

Main PC 

CPU: i9 7980XE @4.5GHz/1.22v/-2 AVX offset 

Cooler: EKWB Supremacy Block - custom loop w/360mm +280mm rads 

Motherboard: EVGA X299 Dark 

RAM:4x8GB HyperX Predator DDR4 @3200Mhz CL16 

GPU: Nvidia FE 2060 Super/Corsair HydroX 2070 FE block 

Storage:  1TB MP34 + 1TB 970 Evo + 500GB Atom30 + 250GB 960 Evo 

Optical Drives: LG WH14NS40 

PSU: EVGA 1600W T2 

Case & Fans: Corsair 750D Airflow - 3x Noctua iPPC NF-F12 + 4x Noctua iPPC NF-A14 PWM 

OS: Windows 11

 

Display: LG 27UK650-W (4K 60Hz IPS panel)

Mouse: EVGA X17

Keyboard: Corsair K55 RGB

 

Mobile/Work Devices: 2020 M1 MacBook Air (work computer) - iPhone 13 Pro Max - Apple Watch S3

 

Other Misc Devices: iPod Video (Gen 5.5E, 128GB SD card swap, running Rockbox), Nintendo Switch

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3 minutes ago, Onepoundlion said:

So I just simply plug it in and leave 2 pin left?

I'm not sure where you got the number 2 from.

2, 3, and 4pin fan headers are backwards compatible.

connector_mbfanpwm_3to4pin.pngconnector_mbfanpwm_4to3pin.png

 

Moved to Air Cooling.

If you ever need help with a build, read the following before posting: http://linustechtips.com/main/topic/3061-build-plan-thread-recommendations-please-read-before-posting/
Also, make sure to quote a post or tag a member when replying or else they won't get a notification that you replied to them.

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1 minute ago, WoodenMarker said:

I'm not sure where you got the number 2 from.

2, 3, and 4pin fan headers are backwards compatible.

connector_mbfanpwm_3to4pin.pngconnector_mbfanpwm_4to3pin.png

 

Moved to Air Cooling.

Thanks for the pic! Should help simplify things for the OP. Cool to know that 4 pin fans work on 3 pin headers as well.

Intel HEDT and Server platform enthusiasts: Intel HEDT Xeon/i7 Megathread 

 

Main PC 

CPU: i9 7980XE @4.5GHz/1.22v/-2 AVX offset 

Cooler: EKWB Supremacy Block - custom loop w/360mm +280mm rads 

Motherboard: EVGA X299 Dark 

RAM:4x8GB HyperX Predator DDR4 @3200Mhz CL16 

GPU: Nvidia FE 2060 Super/Corsair HydroX 2070 FE block 

Storage:  1TB MP34 + 1TB 970 Evo + 500GB Atom30 + 250GB 960 Evo 

Optical Drives: LG WH14NS40 

PSU: EVGA 1600W T2 

Case & Fans: Corsair 750D Airflow - 3x Noctua iPPC NF-F12 + 4x Noctua iPPC NF-A14 PWM 

OS: Windows 11

 

Display: LG 27UK650-W (4K 60Hz IPS panel)

Mouse: EVGA X17

Keyboard: Corsair K55 RGB

 

Mobile/Work Devices: 2020 M1 MacBook Air (work computer) - iPhone 13 Pro Max - Apple Watch S3

 

Other Misc Devices: iPod Video (Gen 5.5E, 128GB SD card swap, running Rockbox), Nintendo Switch

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2 minutes ago, WoodenMarker said:

I'm not sure where you got the number 2 from.

2, 3, and 4pin fan headers are backwards compatible.

connector_mbfanpwm_3to4pin.pngconnector_mbfanpwm_4to3pin.png

 

Moved to Air Cooling.

 

I got the fan sorted, thx

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