The answer is very similar to the thread you linked. First, recognize that the ML360R system consists of one pump and three fans that need electrical connections. For EACH of these four units, there is one cable for the pump or fan motor that ends in a common female (with holes) fan connector. Then each also has a separate cable ending in a wider 3-hole connector that looks like it had 4 holes but one is blocked off. That latter is for the ARGB lights in each unit.
Regarding the pump and fan motor cables, I fully expect the one from each of the fans is a 4-hole model, but the one from the pump has three holes. That is because it is using a quirk of the 3- and 4-pin fan systems to ensure that the pump always receives the full 12 VDC power supply it needs to run at full speed all the time. That's its design. Control of the CPU temperature is done solely by changing the speed of the three FANS on the radiator. Plug the PUMP cable into the mobo PUMP_FAN1 header (see mobo manual, p. 36). The AIO system comes with one 3-output fan Splitter so you can connect all three rad fans to the single mobo CPU_FAN1 header. When you get it running, go into BIOS Setup and go to where the PUMP_FAN1 header is configured. See p. 36 and ensure that the header's MODE (upper left) is set to PWM (not to AUTO) so the pump will get the correct power. Check also the CPU_FAN1 header and likewise set it to PWM Mode so it will control those fans correctly. Remember to SAVE and EXIT to save your settings.
Now to the ARGB cables - four of them, too. The system comes with an ARGB Splitter with five output connectors. Plug the ARGB cables from the pump and all three fans into those. Plug the input end of that Splitter into one of the mobo JRAINBOWn headers (see p. 40). You will need to install the MSI utility Mystic Light to use that header to control all the lights in those AIO system parts.