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Old 11-09-2012, 04:44 PM   #1
Xenphor
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Default Are case fans meant to be daisy changed together on a single molex connector?

Some of my fans have come with adapters that convert 3pin to molex male/female. I'm assuming these are meant to be daisy changed together instead of using separate molex connectors? (I have no spare connectors on the MB)
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Old 11-09-2012, 05:04 PM   #2
goobernoodles
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Quote:
Originally Posted by Xenphor View Post
Some of my fans have come with adapters that convert 3pin to molex male/female. I'm assuming these are meant to be daisy changed together instead of using separate molex connectors? (I have no spare connectors on the MB)
That's what they're there for, yes. Just do whatever works in a clean manner. Those things draw so little power you could chain up an entire case full of them.
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Old 11-09-2012, 06:17 PM   #3
aigomorla
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yes cuz the psu inside your computer is a DC constant voltage type.

The amperage fed to each line is variable and can handle up to 15 amps typically or greater.

That means u can daisy chain as many fans as you want on that one molex going directly to your psu as long as u dont exceed the 15amps, because at higher amperage u will burn the wire out.

The average fan pulls arround .15-.25amps.. so yes thats a lot of fans u can daisy chain.
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Old 11-10-2012, 09:16 AM   #4
Xenphor
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okay I have another question now. Some adapters that I have are 3pin to 4pin molex male/female, but another adapter I have is 3pin to 2pin male molex, with the other 2 pins missing. Is there a difference between the two adpaters?
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Old 11-10-2012, 09:48 AM   #5
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Not really a big difference, assuming they are both wired to the yellow 12v line in the molex connector, as far as the fan goes. With daisy chaining the one with only two wires, you lose the pass through of the Red 5v line, so you wouldn't want to hook a molex powered device that was expecting all 4 pins. With SATA/PCI-e power being so common, I doubt you will run into that scenario.
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Old 11-10-2012, 10:19 AM   #6
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This is what I have:

http://www.frys.com/product/2585841?...H:MAIN_RSLT_PG

It seems to be only red and black, but the fans appear to be working okay.
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