Question Case fan question

[LuKaWin10]

Hello, can I connect a 4-pin case fan into a 3-pin motherboard and how? Thanks (Without adapters)

 

[Ralston18]

Maybe.

More information needed:

Full system hardware specs and OS information.

Motherboard, CPU, GPU, RAM?

PSU?

Disk drive(s)?

Fans?

Case?

The answer is likely in the documentation.

Especially for proprietary devices and connections.

Pin by pin.

 

[JohnBonhamsGhost]

can I connect a 4-pin case fan into a 3-pin

a 4pin PWM fan can still run through a 3pin DC header, there will just be no option to set a custom PWM curve.

the only option available this way would be a DC power setting, if available through the motherboard.

 

[LuKaWin10]

Maybe.

More information needed:

Full system hardware specs and OS information.

Motherboard, CPU, GPU, RAM?

PSU?

Disk drive(s)?

Fans?

Case?

The answer is likely in the documentation.

Especially for proprietary devices and connections.

Pin by pin.

Motherboard: P35-DS3 rev 2.1
CPU: IntelCore 2 Duo E6750 @2.66 GHz
RAM: Kingston 2x1 GB 400 MHz DDR2, PQI CORP 2X1 GB 300 MHz DDR2
PSU: Antec 350X 350Q
Disk drives: ADATA SU650, SAMSUNG 870 EVO, SEAGATE BARRACUDA 256GB
Fans: Noctua NF-P12 REDUX 1700 PWM
Case: I think DELUX MidTower ATX case

 

[Ralston18]

This PSU?

Antec 350X PSU

Even if physically connectable (adapters or not) via a 4 pin or 3 pin connection without PWM that PSU may not be capable of supporting the system's power requirements.

Which will lead to another set of problems that may not end well.

The base concern being what/why there is a 4 or 3 pin mismatch?

This motherboard:

Motherboard link

What internal connectors and fan connectors/headers are being used (reference physically numbered Pages 22 & 24)?

How are you trying to match fans to headers?