PC 12v Fans, white wire ?
#1
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Hi All,
Got a couple of spare quiet fans sitting about that I'm going to fit to my PC. These are three wire jobs with the special connector.
Now, I don't have any spare power points on the mobo for these so I was going to wire them up using a molex connector. Problem is, I can't remember what wire is which.
So can someone point me to the decode of the four wires on a molex connector (thing you plug into hard drive for power) and also a decode of what the white wire on a three wire fan is for. I faintly remember something about speed control/speed sensing but I can't remember.
Basically, I'm planning on hooking the black (-) and the red (+) wire up to the molex to get some air moving around this case.
Cheers
Ian
Got a couple of spare quiet fans sitting about that I'm going to fit to my PC. These are three wire jobs with the special connector.
Now, I don't have any spare power points on the mobo for these so I was going to wire them up using a molex connector. Problem is, I can't remember what wire is which.
So can someone point me to the decode of the four wires on a molex connector (thing you plug into hard drive for power) and also a decode of what the white wire on a three wire fan is for. I faintly remember something about speed control/speed sensing but I can't remember.
Basically, I'm planning on hooking the black (-) and the red (+) wire up to the molex to get some air moving around this case.
Cheers
Ian
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Hi Ian
always try to help a fellow Ian
4 wire power connector
red = +5v
black = gnd
black = gnd
yellow = +12v
3 wire fan connector
red = +12v
white = for speed sensor
black = gnd
A lot of fans will not work on 5 volts as it isn't enough to power the electronics inside them, those that do will run slower and quieter
hth Ian (lippy)
always try to help a fellow Ian
4 wire power connector
red = +5v
black = gnd
black = gnd
yellow = +12v
3 wire fan connector
red = +12v
white = for speed sensor
black = gnd
A lot of fans will not work on 5 volts as it isn't enough to power the electronics inside them, those that do will run slower and quieter
hth Ian (lippy)
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