Hi,
fan are connected to the MOBO with 4 pin connector and they are set to PWN in bios. I don't have a Jcorsair port so the Node pro is connected to the 9-pin usb header.
When my PC is on, the fan speed is correctly controlled. Has the system shutdown its when they ramp up as if they were just fully powered.
For the ligthning, I'm ok with them staying rainbow, its the never shutting part that annoy me.