Per the title, I've got an MSI X470 Gaming M7 AC and a Corsair H60 AIO cooler. I have a multitude of headers on the board and I have, on the cooler; 1 x 4 pin plug coming off the supplied fan, & 1 x Single cable coming off the pump/cooler that has 1 x 3 pin plug and 1 x 15 pin (sata?) plug Can anyone tell me definitively, which plugs go on the fan and cooler go to which headers on the mobo? This 15 pin thing is new to me, so very confused and any clear and unambiguous "use header xyz for the 4 pin fan plug" type help would be REALLY appreciated. Many thanks.
The 15 pin is a SATA which has to be connected for power. The others get plugged into the multitude of fan headers above the socket. Consult your manual as it’ll tell you which to use for what.
15 pin SATA power connector to your PSU and pump to PUMP_FAN1, fan to CPU_FAN1 I reckon. Once it's all setup check via the BIOS and software that everything is working right and adjust if need to.