Features: Expansion of the 8-port fan 4-pin interface, one-time solution to the problem of the motherboard fan interface, centralized processing of fan wires, but retains the intelligent speed control function, so that the inside of the chassis is more tidy and beautiful. The power supply can be directly supplied by the power supply, which can reduce the load pressure of the motherboard. Ask the empty line to connect to the motherboard to be responsible for speed measurement and speed regulation. Both power supply and temperature control are correct. Expand 4-pin fan interfaces, solving the problem of lack of motherboard fan interfaces. Designed for 12V 4-Pin 3-Pin fans, support simultaneous starting at most 10 channel fans. In the hub interfaces, the RED CPU interface is the CPU fan dedicated interface (with speed detection function). There is EVA double-sided adhesive at the back of the hub, which can be easily affixed to a flat place. For both 4-Pin and 3-Pin fans. Please note 4Pin fan speed can be adjusted by temperature control. 3Pin fan can also be used, but because 3Pin has no PWM function, it is at fixed speed after inserting. Specifications: Material:PCB Size: Approx.10x4cm/0.39x0.15inches Style: Big 4PIN/SATA- Package Includes: 1x Fan Hub 1x PWM Controller Cable 1x Ribbon 1x Double-sided Adhesive note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.