Product Details Fangrui Product Details 1. Improving Airflow: -to-many Pwm Power Multi Splitter Has Beautiful All Black Sleeve Cables, Which Can Improve Airflow And Confusion And Clutter. 2. Purpose: Fan Pwm Splitter Is Suitable For Situations Where The Cpu Fan Plug (4pin) Is Not Long Enough Or Is Not Used Enough, And The Four Pins Of The Chassis Fan Are Not Long Enough. It Mainly Extends And Expands The Motherboards Four Pin Interface. 3. Scope Of Application: The Extension Cable Connector Splits A 4-pin Female Head Into Multiple 4-pin Male Heads, Suitable For Cpu Or Computer Chassis Fans. 4. Speed Measurement Function: The Pwm Adapter Cable Is Equipped With A Speed Measurement Function. Since A Main Board Power Supply Socket Can Only Detect One Fan Speed, If Other Interfaces Have Speed Measurement Cables, Different Fan Speeds Can Cause Inaccurate Speed Measurement. Therefore, The First Interface Is Equipped With A Speed Measurement Function, And Other Interfaces Do Not. 5. Exquisite Size: Pwm Fan Cable Has Simple And Generous Design, Small S