Question about ASUS Prime X470-Pro

Good day
This is the official answer from Asus on their website:
1 x CPU Fan connector(s) (1 x 4 -pin)
1 x CPU OPT fan connector(s) (1 x 4 -pin)
3 x chassis fan connector(s) (2 x 4 -pin)
1 x AIO_PUMP connector (1 x 4 -pin)
1 x W_PUMP+ connector (1 x 4 -pin)

Basically, this means that you can run a tower cooler with 2 fans and 3 fans for the case directly above it.
Of course, there is also the possibility of an AiO through the AiO_PUMP connector on those, such as the Kraken X72, the fans are then connected directly to the AiO cooler and remain accordingly unoccupied on the motherboard.
NZXT Kraken X72 (2.70cm)

If you want to keep the system completely air-cooled, the tower cooler + 3 case fans should be quite sufficient. Otherwise there is always the possibility of a PWM splitter.
EKWB EK-Cable Y-Splitter 2-Fan PWM (10cm)