You are building your own custom PC and there are risks to doing that.
I think your solution is fine.
I have MSI A320M PRO-VD PLUS motherboard and i want to insall watercooler Cooler Master ML240L RGB. I have 1 problem i don't have pump/cpu-out header. Where i should plug pump to? I thought, idk if i should, but i want to use adapter sata power to 4pin to connect pump and use cpu-fan header for fans on radiator? Should i do that? Is it safe?

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