Rosewill Blackhawk Fans

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ragnorak222

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Jan 25, 2014
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Hello,

I have the Rosewill Midtower Blackhawk case. It comes with five fans. I have the F2 A85M-Pro Motherboard. Now 4 of the fans that's already pre-installed in the case has what I think is a 4 pin molex connector? I'm not entirely sure of the name of it. My question is where do I plug these in? On my motherboard there's only 3 "CHA_FAN" plugs and they look far too small for the one shown in the picture below.

157g17q.jpg

10zmmwg.jpg
 
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festerovic
Those fans are meant to connect directly to the PSU. The 5th fan has 3 or 4 pin mobo connector so that it can be varied by the user via mobo or software.
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ragnorak222

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Jan 25, 2014
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So the 5th fan cable I plug directly into the motherboard in any of the CHA_FAN plugs? And the big white ones I connect directly to the power supply?
 
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ragnorak222

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Jan 25, 2014
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The fan that plugs directly to the motherboard is the fan on the back right next to the I/O panel. Would there be an optimal plug to use for that one?
 
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festerovic

festerovic

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Jul 16, 2008
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It really depends on the fan control software in your BIOS or system tuning software that came with the mobo. Its not really a big deal. If your fan is kinda noisy at 100%, maybe the sweet spot is 90%. But what if the mobo only allows certain headers to change the speed in 1% increments, and other fans are Off/Low/High? thats what im saying.
 
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ragnorak222

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Jan 25, 2014
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Isn't it true that if it's not connected to the mobo you can't change the speed? Like if the fans were connected straight to the psu like in my case, they would only be able to go 100% correct?
 
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festerovic

festerovic

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Jul 16, 2008
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That is correct. You can get a fan controller if you want to use Molex fans in your case, they are pretty cheap.

To be honest, I really prefer 3-4 pin fans vs molex, it seems the wiring on molex connectors is very very cheap on almost every manufacturers' fans. I've had PSU issues because of them before.
 
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