Degenterate

Great! I'm building for the first time ever, so second-guessing such choices seems to be par for this course, hahaha. All the YouTube videos of people setting up the AIO say something along the lines of 'now plug the radiator fans power and RGB cables into the shrouded cables that come off the back of the AIO'. So, not entirely following the instructions (just plugging in the Power cable in this case) makes me nervous. But I'm glad there are still forums out there for posing these questions, and users like yourself willing to help. Much appreciated my dude!

Sorry, I think there might be a misunderstanding. I have six fans total. There are three on the front of my case, two on the top and one at the rear. This is what my set-up would look like if you want to visualise it - https://pcpartpicker.com/b/mP6RsY Don't be discouraged though, I still would very much like a definitive answer. The core difference between my own build and that one is the builder has mounted the radiator to the top, whereas I have mounted mine to the top two fans at the front of the case.

For me I have six LL120's. The h100i platinum RGB came with two M120's but I purchased a x3 pack of the LL120's and swapped two of them onto the radiator. I have the Corsair 465x for my case, so I'd much prefer if all my six fans (3 on front, 2 on top exhaust, 1 at back) worked in a syncronised manner. However, I was tearing my hair out wondering if having all six on the Lightning Hub was preferential over having four on the Lightning Hub and two connected to the shrouded AIO RGB cables. From what you've told me I'm good to connect the 2x radiator fans to the AIO power cables and re-route their RGB cables to join my other four LL120s already on the hub. This would mean the two RGB cables on the AIO go unused. Is this correct? I pretty much put my build on hold trying to find an answer because it was so frustrating. So I really do appreciate the help.

I actually found this thread for the same reason. I have the Lightning Hub and CoPro with six matching LL120 light loop fans, two of which are mounted on the H100i RGB platinum AIO. The fan speed and RGB cords from the AIO messed with my head heaps. From what I understand you're saying definitely connect the radiator mounted fans to the AIO's PWR cable section of the splitter, and it's up to preference for the radiator fans RGB cords. As in you're able to connect the radiators fans to both the six slot Lightning pro with the other non-radiator fans. Or, alternatively can have the radiator fans connected to the RGB splitter section on the AIO cords? Am I understanding that correctly. Is there any disadvantage either way? What would you recommend. Help very, very appreciated!