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Old 29-12-13, 07:14 PM
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Remmy Remmy is offline
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Join Date: Jan 2013
Location: York
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Not sure why I've only just thought of doing this now, but if you had fans which happily run at 5V, then you could just swap the red (5V) and yellow (12V) pins on the molex power, and then you have an automatic 5V fan power supply, without the need for any resistors, or any other external things. I do not know if the number of fans you could power would be limited because I don't know if the 5V line provides too small a current (it may even be rated the same as the 12V line, it's something I'll look into), but this is something I'd love to investigate when I get a digital multimeter Anyway when (if) I do get one, I'll be sure to post my findings for everyone on here
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