It is designed for enthusiasts with need for controlling numerous system fans. This cable hub is capable of expanding one motherboard PWM fan header to support up to five fans. PWM function and speed control can satisfy your control needs. This hub is compatible with 3-pin/4-pin fans (due to 3 pins is without PWM controller, 3-pin fans would run in full speed.) The cable management is supported. It is self-stick for easy installation and has options to hide the PCB itself. Since only one RPM signal can be read by one motherboard connector, only the CPU fan channel of the PWM splitter carries an RPM signal.