I have this AIO water cooler https://www.bequiet.com/en/watercooler/1961 it has two cables, each one has 3 pin connector
I want to connect to my M/B: https://rog.asus.com/motherboards/rog-strix/rog-strix-z690-g-gaming-wifi-model/
I'm not sur because de M/B manual has 4pins fan and pump headers but my AIO has 3 pins.
From what I can tell - the Pure 240 should come with 2x 4-pin 2000rpm PWM fans. The pump connector is 3-pin for signal and powered by a Y-SATA Power adaptor with a maximum of 5,500 RPM.
Look for the fan splitter cable inside the box. Both radiator fans can be connected to a single header on the motherboard.