Supermicro Atom C2000 A1SRi boards - voltage fan control instead of PWM?

[wywywywy]

Hi all,

 

Does anyone know with the Supermicro Atom C2000-series (A1SRi series) board, whether there is a way to control the fans by voltage, rather than PWM please?

 

The reason I ask is because I got some nice Noctua fans coming to me, but they are 3-pin not 4-pin.

 

I don't see any options in the BIOS.  I've done some googles but didn't managed to find any relevant info.

 

Thanks.