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This PWM fan splitter cable features a 1-in-3-out design to run multiple cooling fans from a single header. It is universally compatible with 4Pin PWM and 3Pin standard case fans, meeting diverse cooling expansion needs. The textured D-type sleeved outer shell enhances durability and improves internal chassis aesthetics. It maintains stable signal and power transmission for smooth fan speed adjustment. Lightweight and flexible for easy routing, it is a practical accessory for daily computer assembly, hardware modification and silent cooling optimization.