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Fan (4 pins) HELP!!!!!! - Page 2

post #11 of 32
Quote:
Originally Posted by Hondais1 View Post
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?

Connects a 3-pin fan to a 4-pin psu molex. You can use three of these.

3-Pin Fan(M) to 4-Pin Molex Power Adapter Cable

Or these:

3-Pin to 4-Pin Adapter w/ RPM Connector

basically the same thing but provides yellow RPM wire to monitor fan speed.
post #12 of 32
Thread Starter 
I think your confused. Ill clarify. I have three brand new fans with 4-pins (openings) at the end of their cords. I only have one PSU available in my rig. I currently have a 3-PIN CPU FAN spot open on my motherboard. But even if I got a 3-pin to 4-pin adapter for one of my fans, I would still need to hook up my other two 4-pin fans somehow. I'd need a 4-pin to PSU molex adapter. I just cant find them. Unless, someone knows where.
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post #13 of 32
Quote:
Originally Posted by Hondais1 View Post
I think your confused. Ill clarify. I have three brand new fans with 4-pins (openings) at the end of their cords. I only have one PSU available in my rig. I currently have a 3-PIN CPU FAN spot open on my motherboard. But even if I got a 3-pin to 4-pin adapter for one of my fans, I would still need to hook up my other two 4-pin fans somehow. I'd need a 4-pin to PSU molex adapter. I just cant find them. Unless, someone knows where.
Yep, sorry.... I now see you have 4-pin PWM fans. You won't find any 4-pin pwm to 4-pin molex adapter because nobody makes one. So, heres your options. You can use the second adapter (open face) I linked to and daisy-chain the fans off the one PSU molex connector, the fans will run +/-100% full speed given that the PSU is supplying +12v.

Your other option is to get different fans with 3-pin or molex type connectors. Sorry, not much else to offer.
post #14 of 32
Thread Starter 
Ok, thanks so much for your help!!! I added +1 to your Rep!
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post #15 of 32
Oh please do not ruin your nice Rocketfish PWM fans. They appear to be PWM versions of standard Chinese generic fans. As such they will provide a soft air output and not much noise. In my study I found that generic fans are just fine within their limits.

Your main problem is that you are using a Dell motherboard. Every connector is proprietary. You can only use Dell power supplies. On and on.

I have used Dell fans. I clipped off their plugs and replaced them with standard plugs. You will have the opposite problem: adapt standard fan plugs to Dell fan headers. Luckily for you, I just tonight saw this. Three of these and you can put your PWM fans to work.

But really, it's a shame to waste your money and your energy. You have a fine case. You have fine case fans. It is unclear whether you will be able to control your fans with your Dell mb. Have you looked in your BIOS to see if you can find any controls? Remember, Dell makes their machines for the mainstream consumer, not modders like us.

IMO you'd be better off buying a low-cost Gigabyte motherboard for your CPU. They tend to have flexibility in how they allow for fan control, and you can readily understand their BIOS. Putting your Dell mb in a new case is like pouring old wine in a new skin. Time to move on.
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post #16 of 32
Thread Starter 
Thanks for that info but its an HP computer. I dont think it would have a DELL motherboard. Ill take a look at the pic and my bios. Hopefully, Ill be able to use my three remaining fans.

If i cut the sides off the edges on the 4-pin USB port located on the motherboard (as shown in the pic), would it power my fans??????

Edited by Hondais1 - 12/20/10 at 12:12am
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post #17 of 32
Man, you have me confused. Is the board from a Dell or isn't it? You keep saying it's not a Dell, then say all the parts are coming from a Walmart computer and you link to a Dell. Well wth?

If it is a Dell, then the pictures of the headers you linked to are right. Dell uses a 5 pin plug, with only 4 wires.

However, the fans are wired differently than a regular fan. I just did a write up of how to re-configure the Dell wiring to make it work on regular boards. You can read about that here.

For your application, you'll need to configure it backwards.
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post #18 of 32
Thread Starter 
Sorry, this is the correct link:
http://www.walmart.com/ip/HP-p6533w-b/14575759

I thought the DELL was being brought up bc of my specs under my profile.

Ill take a look at your link. Thanks
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post #19 of 32
Thread Starter 
These are both side of the 4-pin fan cord. It cant currently fit in the motherboards 4-pin USB slot because the fan cord is to big to fit in and they dont line up correctly. If I cut off the "wall" around the motherboards 4-pin connector, would it power the fans?



Edited by Hondais1 - 12/20/10 at 12:44am
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post #20 of 32
Quote:
Originally Posted by Hondais1 View Post
Sorry, this is the correct link:
http://www.walmart.com/ip/HP-p6533w-b/14575759

I thought the DELL was being brought up bc of my specs under my profile.

Ill take a look at your link. Thanks
Ahh, ok. That's definitely different.

As for the wiring, you'll have to dig through some HP manuals for the fan pinouts to see if they have proprietary wiring configurations or not.
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