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Fan (4 pins) HELP!!!!!!

post #1 of 32
Thread Starter 
Hello everybody,

I got a new tower and it has 5 fans (all 120mm). 2 of the fans have a PSU adapter but the other 3 fans ONLY have a 4 pin connector. My motherboard has (1) 3 pin CPU FAN connector. I need to run the rest of my fans but I have nowhere to connect them to. Where can I get a cheap priced fan controller? I dont want a PSU adapter for all 3 fans but a fan controller with 4 pin connectors is what I need. Any help would be wonderful THANKS
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post #2 of 32
I have a 3 pin plugged into a 4 pin connector on my motherboard. Not sure if you could plug in a 4 pin on a 3 pin header, I'm assuming you could, but won't have control over fan speed.

Another thing, cheap fan controller? Hit the For Sale section. You could probably find one in there for cheap. If not, then hit up Newegg. They run about ~20$.
post #3 of 32
Fan Controllers or buy some molex to 3 pin adapters.
post #4 of 32
Quote:
Originally Posted by 78@pwnt4lif3 View Post
Fan Controllers or buy some molex to 3 pin adapters.
I don't think he wants to run his fans at 100% all the time... But he could always do the 7V mod on the molex.
post #5 of 32
Quote:
Originally Posted by Hondais1 View Post
Hello everybody,

I got a new tower and it has 5 fans (all 120mm). 2 of the fans have a PSU adapter but the other 3 fans ONLY have a 4 pin connector. My motherboard has (1) 3 pin CPU FAN connector. I need to run the rest of my fans but I have nowhere to connect them to. Where can I get a cheap priced fan controller? I dont want a PSU adapter for all 3 fans but a fan controller with 4 pin connectors is what I need. Any help would be wonderful THANKS
I'm hoping you didn't put your Dell innards in a new case.

Please list the fans, including model numbers and especially the Amperage listed on each fan's label.

Please tell what motherboard you are really using for this project.

Fans come voltage controlled (small 3-pin plug), PWM controlled (small 4-pin plug) and uncontrolled (two fan wires going to a large 4-pin Molex connector; it is designed to get power directly from your PSU).

In general, if the Amps add up to less than the total current a motherboard fan header can tolerate, you can gang them together using Y-cables. The best one is here, from SVC. These seemingly last forever, and they come with free shipping. As 4-pin cables they can handle your PWM controlled fans.
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post #6 of 32
Thread Starter 

Im doing this as a project. NOT FOR MY DELL.

Its my very 1st rig. These are the fans. I got 3 of them:
http://www.bestbuy.com/site/Rocketfi...ract_desc=null

I dont know the name of my motherboard. I have EVEREST ULTIMATE EDITION and it says I have an unknown motherboard. I uploaded the screen shots.

This is the computer that I took out all the hardware for my project:
http://www.walmart.com/ip/Dell-i560-3911NBK/15120471

This is the tower I bought and have all the HP parts in:


***Also, if you know anyone who works at BEST BUY, they get GREAT DISCOUNTS on most items. The 120mm fans cost me about $3.30 a piece


Edited by Hondais1 - 12/19/10 at 4:04am
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post #7 of 32
Thread Starter 
I have 4 of these on the motherboard (refer to my upload). They are 4 pins but on the very left of each, there is a missing pin. They are labeled as USB on the motherboard. What exactly are they and could I use them to power my fans?????

It looks like my fans 4 pins could go in but the case around them is too small.
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post #8 of 32
Those won't work for fans.They are crappy dell proprietary connectors.Fan controllers don't have 4 pin connectors.

4 pin fans are made to plug into a 4 pin header.If you don't they will run full speed with an adapter.
Edited by djsi38t - 12/19/10 at 4:30am
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post #9 of 32
if your tight on money wire in the red and black from the fans to the yellow and balck on the 4 pin molex coming from the psu
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post #10 of 32
Thread Starter 
Ok, besides this project NOT BEING A DELL, it looks like I have to use a PSU adapter. I only have 1 PSU molex connection left. Where can I get a 4 pin to PSU molex adapter? And how can I get it so ALL of my 3 fans are powered on via the molex adapters?
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