Description: Applicable object: desktop fan Working principle: The 15PiN interface is connected to the host , and fans are powered through the interface; the speed control interface is connected to the CPU fan interface through a 2P to 4P cable; the computer CPU fan connected to the red interface of the controller; the fan installed by the connected to FAN1-9 is enough; the detects the speed of the CPU fan and synchronously adjusts the speed of fans. Therefore, FAN1-9 does not have the function of feedback speed, only PWM speed regulation function circuit board: fully gold plated circuit board, equipped with 10 capacitors Adhesive fixation: Equipped with 1 double sided EVA cotton, the thickness of 2mm EVA completely covers the bottom, protects the bottom solder joints, avoids caused by contacting the metal chassis, and can also be fixed to any position of the host by EVA sticking Interface: 3PiN 4PiN fan interface, dedicated interface for CPU cooling fan, speed control interface, power interface Specification: Size: 8.6cmx4cm/3.39inchx1.57inch Material: Metal Size Chart: 8.6cmx4cm/3.39inchx1.57inch Package Includes: 1 Desktop Fan Extender 1 Double sided adhesive 1 PMW speed control line 1 Fastening tie Note: Please allow slightly errors due to manual measurement and different monitors.