Features: Effortlessly convert USB ports to 3Pin/4Pin fan connectors with this 5V powered adapter, enabling upgraded for enhanced PC cooling. Premium copper wiring ensures optimal conductivity and durability, while integrated speed reducers allow customizable fan for quieter operational. Ideal for PC builders, server maintainers, and enthusiasts seeking flexible cooling solution for laptop modifications. Perfect for optimizing in gaming PC, workstation servers, or external cooling setups where space efficient thermal management matters most. Compact design with easy installation simplifies adding auxiliary fans to any configuration, making professional thermal customization accessible to all skill levels. Specifications: Component: PVC+Copper Temperature: 80℃ Type:30cm USB to 3Pin/30cm USB to 4Pin/30cm USB to Big 4Pin/50cm USB to 4Pin/50cm USB to Big 4Pin Package Includes: 1Pc Power Cable 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.