![]() ![]() ![]() These are 4-pin PWM fans and require a 4-pin PWM connection for Designed for Cooling Corsair Dominator Platinum memory modules (but. This is a safety measure so that, if the wire comes. Most fans with a separate PWM-speed-control lead are designed to run at full speed if that lead is left floating. The tacho signal from the fan sinks to ground for every revolution, the input on the motherboard is pulled high Corsair Brushless Fan Wiring Diagram 4-wire. The PWM signal from the motherboard sources 5V during the on state of the pulse, otherwise it's pulled to ground. For 4-Wire Pulse Width Modulation (PWM) Controlled Fans. ![]()
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