This fan controller is manufactured using PCB, ABS and electronic component materials to ensure performance. Meticulously processed to ensure safety using. Designed for 4-pin /3-pin fans, support simultaneous starting at most 8 channel fans. Features -Color:Black -Material:PCB, ABS, electronic component -Size:12.10X6.50X2.00cm/4.76X2.55X0.79in -Voltage range: -12v -Adjustment method: Manual knob adjustment -Power supply interface: Large 4D -Fans available: 8 -Upper limit power: 72w (theoretical value) -Installation location: Chassis location -Fan interface: (can be connected to 3pin) -Fan controller is practical to use, and compatible with a wide range of computer and pc case fans -Adjustable airflow, advanced technology ensure silent operation, the fan controller can meet your needs well. -Fan controller allows for easy connection to most computer motherboards with the large 4d interface. -Quick and simple installation and replacement, the fan controller can be done easily. -For both 4-pin and 3-pin fans. Nice to replace old or fan controller. Package list: 3 x computer fan adapter