RustyNutz

Hi all I have recently bought these fans and installed then into my case https://www.scan.co.uk/products/120mm-thermaltake-riing-12-pwm-led-rgb-3-fan-multi-pack mt problem is the fan dont seem to work in the 256 colors and they look like they are slowing down and then spinning fast all the time here is a video to see :- https://youtu.be/cqzcga4pNac and could anyone please tell me what the other plug socket is for on the controller below https://imgur.com/ahz6LD0