Ninja2 with a 4 pin CPU fan connector

[ashrack]

Nowadays all the motherboards use the 4pin connector for the CPU FAN header and sadly motherboard makers have started to discontinue support for FANs with 3 pin CPU connector to be controlled thru bios using Smart Fan or similar.

Since Ninja2 is meant to be quiet why doesn't the FAN use the 4 pin connector (PWM)?
Even with my board I had to request a BIOS fix for my Ninja's fan to operate thru Smart Fan in bios because it is only a 3 pin CPU fan.

3 pin to 4 pin CPU connector

[hiroshige]

Hello ashrack,

usually mainboard with 4pin-connectors do have the option to control the fans with voltage-regulation - so regulation is still possible. On the other hand, you will get problems in regulating 4pin-fans on boards only with 3pin-connectors - that's the reason why Ninja 2 has 3pin.

Cheers,
Stefan

[ashrack]

I see. Thanks for clarification. Unfortunately some motherboard manufacturers nowadays do not want to support fan regulation for 3pin FANs.
For my MB I had to exchange emails for more than week and explaining to them that only a simple bios fix will enable the fan regulation for 3 pin FANs.
It was only after I said that I was a computer science student have they send me the bios which works with a 3pin CPU FAN connector.

I also heard that newer Gigabyte motherboards are the same.
Do you know why the mobo manufacturers are reluctant to support 3 pin CPU FAN connectors for fan regulations?