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Is it normal for a 4 pin fan splitter to have 1 4 pin input and x 3 pin inputs? Does that still work with PWM? - Quora
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mosfet - How can I adapt a 3-pin PC fan connector to a 4-pin connector? - Electrical Engineering Stack Exchange
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6in 3-pin Fan to 4-pin Pass-Through Power Adapter Cable | Internal PC Power Cables | Power Cords | Power Charging and Cable Management
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