I've seen posts from about a month ago around this issue, but nothing more recent, so I figured I'd reach out.
I'm using 6 of the riing plus 120mm fans, and 2 controllers in my Ryzen 1600 build with MSI's Gaming Pro Carbon motherboard.
I continually see the "Do not find Fan Controller, please check Fan Controller is connected. Error Code:H_0x0001) error.
My fans are all spinning at default, and display the default rainbow color wheel LED setting, so I know the controllers are working.
I've tried everything I could find across the forums - all usb ports 2.0/3