Case fan molex connection

jaymac · 30-09-2007, 10:55 PM

Hi I am just fitting a case fan and not sure of the connections I have no sockets on the mobo so have to use an adaptor to 4-pin ,I believe this is a molex .I have one spare connector from the psu which has several leads Red/Black amd yellow. The adaptor hs 2 leads coming out for the fan .My problem is if I connect upto the spare thes 2 leads are at the opposite end to the red and black on the spare it looks as if they would in fact be lined up with the yellow cables . Is this how it should be . Thanks for any advice

Ghostman 1 · 01-10-2007, 02:12 AM

If the fan has a red wire, and one black, Then you must used the red and the black on the power supply.(molex connection)

jaymac · 01-10-2007, 05:07 PM

Thanks have now sorted but have found that the red/black from the adaptor to the fan actually connect to the yellow and black pins on the molex as this is the 12V supply

30-09-2007, 10:55 PM	#1 (permalink) Top
jaymac Geek Trainee Join Date: Sep 2007 Posts: 2 Status: Offline	Case fan molex connection Hi I am just fitting a case fan and not sure of the connections I have no sockets on the mobo so have to use an adaptor to 4-pin ,I believe this is a molex .I have one spare connector from the psu which has several leads Red/Black amd yellow. The adaptor hs 2 leads coming out for the fan .My problem is if I connect upto the spare thes 2 leads are at the opposite end to the red and black on the spare it looks as if they would in fact be lined up with the yellow cables . Is this how it should be . Thanks for any advice

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01-10-2007, 02:12 AM	#2 (permalink) Top
Ghostman 1 Ultra Geek Join Date: May 2006 Gender: Male Posts: 730 Times Helpful: 34 My Mood: Mellow Status: Offline	If the fan has a red wire, and one black, Then you must used the red and the black on the power supply.(molex connection)

01-10-2007, 05:07 PM	#3 (permalink) Top
jaymac Geek Trainee Join Date: Sep 2007 Posts: 2 Status: Offline	Thanks have now sorted but have found that the red/black from the adaptor to the fan actually connect to the yellow and black pins on the molex as this is the 12V supply

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