iDVD Posted January 18, 2014 Share Posted January 18, 2014 Hello, I'm doing a MacPro case mod project. And I want to connect MacPro fans to motherboard or power supply, but I'm having problem connecting it. I can't find which pin goes where. Maybe someone knows how to connect it right ? If I try connect first pin(GND) to ground and second pin (VCC) to +12V nothing happens. If I try connect first pin(GND) to ground and second pin (VCC) to +12V nothing happens and fourth pin (VM) to +5V My guess is: GND = Ground VCC = +12 (but I'm not 100% sure) O / P = Sense /Tacho (but I'm not 100% sure) VM = PWM (but I'm not 100% sure) I take some pics and mane diagram for more understanding if i helps. Maybe someone know how make this thing work ? Link to comment https://www.insanelymac.com/forum/topic/295402-macpro-fan-pinout/ Share on other sites More sharing options...
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