Laptop fan connector

Reloadron

Joined Jan 15, 2015
6,312
Looks like your pictured fan uses a 4 wire fan. While the colors used may change the pinouts are generally the same. A Google of "4 pin pc fan pinout" will give you the pinout. Also a Google of 4 wire fan speed controller will give you solutions like this one which can drive 3 fans. If you just want to have the fan run at maximum speed tie the +12 Volt pin to the PWM signal pin.

The male connector should use this pinout:
4 Pin Fan Header.png

Generally these are as follows:
1. Ground
2. 12 Volts
3. Sense (Tach Output)
4. Control (PWM INPUT)

Ron
 

bassbindevil

Joined Jan 23, 2014
228
Some kind of JST connector? It looks like a smaller pitch than the 0.1" spacing found on PC motherboards. I'd be tempted to just chop the connector off and replace it with a 0.1" pitch Molex/Dupont style connector. One source would be the 3.5" floppy power connector from an old PC power supply harness.
 

Thread Starter

mag999

Joined Nov 18, 2021
2
Pin spacing is 1,5mm.
The motherboard is from an Acer laptop. I could cut the wires but hoped I could find the connector.
 

Tonyr1084

Joined Sep 24, 2015
6,588
More than just pin spacing, the mating connector has to match the same profile and locking system. Also, there's probably a clocking pin to prevent it from being plugged in the wrong way.
 

BobaMosfet

Joined Jul 1, 2009
1,913
Hi

I'm trying to convert a laptop to a server. Want to improve the cooling, but can't find the correct connector name / model?
That is a molex connector. Contact molex.com; their people will be happy to identify it specifically- you cold probably even get a sample for free...
 
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