Features: Brand new and high quality 16 fans can be connected at the same time, providing accurate temperature monitoring and adjustment functions to keep the internal temperature of the chassis suitable. Unique magnetic material, can be easily installed inside the chassis, without occupying space. Built-in temperature sensors can monitor the internal temperature of the chassis in real time and automatically adjust the fan speed according to the set value. Accurate temperature control can keep the internal temperature of the chassis stable, prolong life of hardware and improve system performances. It is suitable for all computer users who need to keep the internal temperature of the chassis stable, especially gamers, overclocking enthusiasts, server administrators and other users who have high heat dissipation requirements. Specifications: Material:PCB Package Includes: 1x Cooling Fan Hub 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.