Re: [CPU fan connector] Zalman CNPS9500A - missing a pin?
The fourth pin allows for fan speed control. This is not necessary on Zalman heatsinks because they include the FanMate2 for fan control. -- Please use all available doors...you have 33 to choose from.
Let's say if one does not like the "FanMate2," can one just plug the (very same three-pin connector as the FanMate) fan DIRECTLY into the CPU_FAN connector and live happily without the fancy fan-speed-control?
Honestly, if it works just as well in cooling without FanMate2, what's the point of continuous adjustment via a knob? -- Oh, I love the smell of fish. Guts, rotten, it's all good.
I've seen it as an option is the BIOS. That did apply to all MB connected fans though. The 3 pin and 4 pin fans control speed differently, so it's not quite as simple as swapping one for the other.