The H87M has two CPU fan headers, one 4-pin and one 3-pin. Is it possible to apply voltage control to the 3-pin CPU header via the BIOS? Does it matter whether or not the 4-pin CPU header is also being used?

(Apologies if this is an obvious and/or already-answered question, but fan-controls, and particularly CPU fan controls, are notoriously idiosyncratic and poorly documented -- and it is better to find out if a MB does what you want before purchasing it.)