Slymitec

I have 3 TT Riing RGB fans which could be connectted to USB port via a control box( not PLUS version). The fan has 5pin, I identified a GND and a +12v pin for the fan. I have no information about the other pins save for the labels that appeared on the control box pcb (YPK). What is the definition of other? PWM? Light Control? Otherwise, what is the order of wire? thanks