enjoyfebruary Posted December 15, 2011 Share Posted December 15, 2011 I have recently been asked a few times how I setup the front cpu fans on my G5 to ATX conversion. Truth be told there isn't really a right way, though there is a wrong way. The wrong way is combining the two fan RPM connections together. Here is how I hooked up my fans. The way I hooked up PC PWM fans: What you could do for standard 3 wire fans Original G5 Pinout: You'll have to do some splicing in with the original fan cables since the pins are not standard. Additionally you'll have to splice the other end of the connection (after the G5 divider connector) to a standard PWM/3pin connector. To get RPM to report to the motherboard you need to hookup a separate 3pin connection after the connection in the G5 divider that will run to the motherboard as a "case fan." Keep in mind that you'll only be reporting back one of the two fans; though they should be at the same speed since they SHOULD be the same make/model and so forth. Any questions please reply and i'll get back to you. Thanks. Dan. Sorry for the crumby video quality. http://www.youtube.com/watch?v=MqKuVQGjMPg **This is done at risk to you and your system. Please be aware that I am not responsible for damage to your hardware." Link to comment Share on other sites More sharing options...
Stonepaiste Posted August 10, 2018 Share Posted August 10, 2018 Hey. I have been looking at this for my New atx G5 butiks as i want my mobo to controll the fans. I have a Mobo with 4 pin PWM that Can take max of 1 amp. Now i have a question. In the PWM setup you have drawed up. What goes to what In the 4 pin connecter on the mobo? Is 2x12v —> Fan PWR 2xGND —> GND 2x Fan controll —> FAN In 1x Fan RPM —PWM or do i need to swap fan controll and RPM ? Hope it makes sense.. the picture is the pin setup on my mobo. And is it even possible to run both fans on one 4 pin connector? Link to comment Share on other sites More sharing options...
duffs Posted August 10, 2018 Share Posted August 10, 2018 split everything except rpm speed readout (cha fan in). RPM speed from one fan only. Link to comment Share on other sites More sharing options...
Stonepaiste Posted August 13, 2018 Share Posted August 13, 2018 Thanks! I'll try that! Link to comment Share on other sites More sharing options...
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