1、2 Pin 3 Pin 4 Pin: This PC chassis cooling fan hub can be connected to 2 pin, 3 pin, and 4 pin fans to solve the problem of insufficient ports on the mainboard and provide a better power supply solution for heat dissipation fans on the mainboard. 2、6Pin Power Supply: This 2 Pin 3 Pin 4 Pin fan adapter provides 6Pin power supply. The governor can supply power to up to 4 fans, and the rotation potentiometer can adjust the speed of up to 4 fans at the same time. 3、Plug and Play: This chassis fan 4 way splitter supports plug and play, and drivers are not needed. It can be directly powered by 12V power supply to reduce the load pressure on the mainboard. 4、Strong Compatibility: This PWM PC chassis fan hub is suitable for 2 Pin, 3 Pin and 4 Pin fans. If the fan does not support PWM speed regulation function, the speed regulation function is invalid. 5、Please Notice: The total current connected to the fan shall not exceed the maximum current value of 7A to avoid damage to the governor. 1 x 4 Pin Fan Adapter (Speed Controller and Extension Cord)1 x User Manual Item Type: 4 Pin Fan Adapter Material: Plastic, MetalPower Supply Voltage: 12VPower Supply Interface: 6PIN (2x3) InterfaceFan Port Type: 2Pin / 3Pin / 4Pin