When on aquabus you control the outputs using the controllers (including curve) from the AQ6 tab. The Quadro fan outputs are automatically mapped to fan 5 through 8 in AQ6.
Bummer it doesn't allow you to control the RGB LEDs unless of course you magically find another USB header when you know you're all out and continuously told by AC that if you chain USB hubs for more headers it can create issues so it's a lose-lose there. lol