Unfortunately MSI cheating very at the fan connectors. Although all connections as 4 pin are available, but only where the CPU really with function!
All other fan connectors are in reality only 3 pin, the pin 4 is dead decoration and not even connected (according to the manual with NC = not connected occupied). Thus, of course, no PWM signal is at your disposal!
Since that few buyers get the manual, before making a purchase, I feel that as a clear sham the customer the presence of full-fledged 4 Pins deceives! For 2 star deduction and the Board will return!