So, i want to buy Fractal Design Define r5 and replace case fans on 3 Noctua NF-A15 (one on rear side and two on front). And i really dont know where i should connect them. Thought about motherboard (Asus z170-A), plug two front fans with Y splitter into one header (is it even safe?) and one rear into another header, or is it better to plug all of them directly into psu? Or maybe i should use case fan controller? Help me with advice please