Description: 3Pin/4Pin Fan Hub: If your motherboard lacks fan interfaces, fan hub is the neat and tidy way to expand. Support 3Pin/4Pin dual-type standard fan port. Knob Adjust: High accuracy and good performance, equipped with an independent speed controller and the speed can be adjusted at will. Multiple Type: 3/8-fan stepless variable speed upgrade, 1/4-Knobs control speed regulation, power supply interface supports 4D/SATA, 6 types for your choice. Universal: Widely used for PC computer water cooling system, easy to install. Material: This Speed Controller adopts plastic and metal materials, durable, reliable, with low loss and low heat. Specification: Material: Plastic, Metal Color: Black 3 Way Cable Length: About 45cm/17.7inch Types: 1(3 Way With Cable), 2(3 Way With Black Cable), 3(8 Way 1 Knob 4D), 4(8 Way 1 Knob SATA), 5(8 Way 4 Knob 4D), 6(8 Way 4 Knob SATA) 3 Way: Voltage: 0-12V Connectable Fans: 3 Power: 30W Adjustment Method: 1 Manual Adjustment Knob Power Supply Interface: 4D Installation Position: PCI Position of PC Chassis Fan Interface: 4PIN (3PIN Can be connected) 8 Way: Voltage: 0-12V Connectable Fans: 8 Power: 72W Adjustment Method: 1/4 Manual Adjustment Knob Power Supply Interface: 4D/SATA Installation Position: PCI Position of PC Chassis Fan Interface: 4PIN (3PIN Can be connected) Package includes: 1pc x Cooling Fan Hub Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 1-2 cm differences due to manual measurement.