Case cables connection help please

[wizard]

Using a be quiet dark base 900 pro rev 2 case with Asus Rog Strix X570-E motherboard.

The case has a cable from the PCB Panel Box at the back of the case (runs LCD, fans etc) and has a cable coming off it which has, what looks like, a 4 pin "fan connector". The manual states " PWM connector to the motherboard". I am confused as to where on the motherboard this one goes. I have a CHA_Fan1, CHA_Fan2 and an extra CPU Fan connector. Does it connect to one of these please?

There is also a spare motherboard AIO pump connector which I am not using.

 

[El Jimben]

CHA means chassis so if they're 4 pin then use one of those. If they're only 3 pin, you could still use them but it'd just mean that the case fans are running at full pelt the whole time.