I have the same issue. Brand new RGB Pro ram isn't working properly with my GA-Z270X-DESIGNARE motherboard. I get the same visual as @alelelelx does, with the top and bottom LED in the leftmost RAM just solid red and everything else is off.
There's no option anywhere in my BIOS to do anything with a "SM-Bus". I've also tried uninstalling/reinstalling/updating/closing Corsair's (and others) software and firmware but none of that worked at all. I've contacted Corsair support about it but they were unable to fix the issue and have since stopped responding to the ticket.
Did anyone have any luck solving the issue, or should I ask for an RMA?