1?��2 in 1 3pin RGB+4pin PWM fan hub, can simultaneously expand any 5V addressable RGB products, and connect to an RGB cable on the motherboard at the same time. 2?��Only compatible with 3pin 5V addressable RGB headers or controllers, cannot connect to 12V RGB light bar or M/B. Suitable for 4?pin and 3?pin fans. The magnetic bracket design can easily fix the hub in the chassis. 3?��6pcs PWM 4pin header, compatible with 3pin cable (speed control function is not applicable to 3?pin fan), the red 4?pin 90?? pin header is only connected to CPU fan. 4?��Expand 4?pin fan interface to solve the problem of insufficient motherboard fan interface. Specially designed for 12V 4?pin 3?pin fans, and supports up to 10 channel at the same time. 5?��RED CPU interface is a dedicated interface for CPU fan (with speed detection function). Since the motherboard can only receive one speed signal, the remaining 9 conventional fan interfaces have PWM function, but no speed signal.