1、The cooling fan has 11 blades, the speed can be 1200rpm, the air volume is large, and the heat dissipation effect is good. 2、Made of high‑quality thick material, and the outer frame is sturdy, which can effectively protect the fan from deformation. 3、With shockproof and silent design, there will be no noise during use and will not affect the work. It is very suitable for office use. 4、The ARGB controller in the kit has multiple interfaces of different types, which is more versatile and practical, reducing wiring troubles. 5、The remote control can be used to control the fan speed, light mode and brightness, and the operation is simple. 3 x Cooling Fan1 x ARGB Controller1 x Remote Control(without Battery)1 x Adapter Cable Item Type: Cooling FansInner Ring Diameter: Approx. 10.8cm / 4.3inOuter Ring Diameter: Approx. 12cm / 4.7inBearing: HydraulicRated Voltage: 12VRated Current: 0.17 ± 0.03ASpeed: 1200(±10%) RPMFan Blades: 11Noise Level: 19.5dBAMTBF: 20,000 hoursInterface: 6pinRemote Control Battery: 150mAh CR2025(not included)How to use: 1. Turn off the power of the computer, open the case, and find a suitable interface that can be connected to a large 4pin 2. The big 4pin of the adapter cable is aligned with the interface and inserted 3. Insert the red end of the adapter cable into the red port of the controller 4. Align the 6pin of the cooling fan with the applicable 6pin interface of the controller and insert 5. You can use the computer when you turn it on