The description says that 3-pin fans also work. However, I doubt that in this case the fans are speed-controlled, but simply run at the maximum speed. Does anyone know anything more precise?

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The 4th pin is precisely for speed control. With a 3-pin fan, you can never control the speed individually unless you change the fan curve in the BIOS.

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I haven't tested this yet, but it shouldn't cause any problems.
Otherwise I have a problem :D I have 10x 3-pin fans and this hub here.

Your data. Your choice.

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Question about Lamptron SP105 Stroke

The description says that 3-pin fans also work. However, I doubt that in this case the fans are speed-controlled, but simply run at the maximum speed. Does anyone know anything more precise?