I would post in the Corsair Cooling forum as someone with more experience may be able to help. The Commander (Pro) adds another level if the cooler is in any way connected to that.
My cooler's pump speed cable is connected to the CPU_fan connector on the X470-f and BIOS CPU fan setting on the fan wizard chart is set to full speed at all temps and DC mode (cpu fan shows as DISABLED in Monitoring, so PWM/DC and % may have no influence), while my case fans are set to PWM and custom curves. The radiator fans are connected to the pump and the pump USB connector is connected to a USB2.0 port on the lower portion of the board.
Edit: Added cpu fan note in parentheses ()
X470-F, 2700X, 5700 XT Nitro+, 970 EVO, LanCool 2 Mesh Performance, H115i Pro, 16GB3000C14, TT650W Gold