Not wishing to hijack this thread, but I'm about to do the same tomorrow, by replacing my non-RGB fans in a CM Storm Trooper with the Crosshair Hero VII mobo.
I'm buying a 3 fan PC Cooler Corona RGB kit new, but since the people know less about RGB than I do (which isn't saying very much), they couldn't really answer many questions.
I needed to know whether the kit was ARGB (5v) or standard RGB (12v), because of the voltage differences and it seems that it's the latter, which is fine because I prefer static colours.
As far as I've gathered today, each fan has two cables - one is a 4 pin 12v RGB which I can connect to the mobo 12v RGB header and the other is a standard 4 pin PWM which I can connect to one of the mobo fan headers.
I'm assuming it's perfectly fine to run the three fans through a splitter and then connect that to the mobo header.
Anyway, what I have learned today is that it's not a good idea to connect ARGB (5v) to a standard RGB (12v) header, for obvious reasons.
I also plan to use Aura Sync, so
@Jose Jeswin I'll let you know how I get on tomorrow since PC Cooler say that the fans are Aura compatible.
This guide image is handy.
View attachment 131683