Features: Maximize the efficiency of your electronic devices with 40mm USB powered cooling fan, designed to keep your equipment cool and operational even during usage. Featuring high capabilities plastic construction, this cooling fan comes equipped with stability to your setup's aesthetics. for enthusiasts and professional looking to protect their routers, modems, gaming laptops, and other heat sensitive electronics from overheating. this cooling fan for Sound video projects, Networks cabinets, server cooling tasks, and as workstation accessory. With its plug and play USB connectivity, this cooling fan offer easy setup, ensuring that your devices maintain optimal temperatures for performances. Specifications: Component:Plastic Size: Approx.4x4x1cm/1.57x1.57x0.39 Fan speed: 5800rpm Package Includes: 1Pc USB Cooling Fan note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.