A USB-C to 3-pin and 4-pin fan header cable - Function is clear A cable with a USB-C type C connector on one end and a 3-pin or 4-pin PC fan header on the other end. It allows most case fans to be powered using a Type-C connection. - Why you need it - Enables powering standard case fans from a Type-C power source, expanding where you can power cooling fans. - Simplifies connections and reduces the need to locate a motherboard fan header. - Compatibility - Works with most 3-pin and 4-pin PC case fans. - Suitable for office setups and gaming rigs where a Type-C power source is available. - Performance and reliability - Made of high quality materials with exquisite workmanship. - Ensures good quality and long service life for reliable cooling in daily use. - Convenience and efficiency - Improves connection accuracy, saves time, and provides convenient operation when wiring fans. - Use scenarios 1) Office PC or workstation Connect a USB-C power source (such as a USB-C hub or laptop charger) to power case fans via their 3-pin or 4-pin headers, reducing dependency on motherboard fan headers. 2) Gaming PC builds Use in setups where a Type-C power source is available to supplement fan cooling, helping maintain chassis temperatures during long gaming sessions. 3) Portable or test bench environments Use with a USB-C power bank or portable USB-C power supply to run fans on a bench test rig, during LAN parties, or in compact builds where space and power routing are critical. Notes - This cable provides a straightforward solution to power most case fans through a Type-C connection. - For best results, ensure your USB-C power source can supply adequate current for the number and type of fans you plan to run.