Features: Experience efficient cooling with USB Speed Controls Fan, to prevent overheating in routers, and other electronics, ensuring performances. Featuring Multiple speed controller and silicone rubber feet, this fan offer customizable Airflows and noise reductions, making for quiet. for enthusiasts and gamers who need cooling solution for their electronic devices, ensuring longevitys and efficiency. for use in home entertainment, office space, or any area where electronic devices require effective heat dissipation. With USB power compatibility, this fan is easy to installs and transport, providing cooling option. Specifications: Materials: ABS Size:12x12x4.2cm,12x12x8.4cm Style: Single Fan, Double Fan, Single Fan Switches Cable, Double Fan Switches Cable, Single Fan Speed Controller, Double Fan Speed Controller(optional) Package Includes: 1Set Cooling Fan note: Please allow 1-3mm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the picture may not reflect the actual of the item.