PWM one-to-three connection cable, 26cm in length. Protective fan interface allows easy parallel connection of 4-pin PWM temperature control fans. Maximizes the limited number of 4-pin fan headers on the motherboard by supporting three 4-pin or 3-pin fans. Two of the three fan connectors have the tachometer (speed) signal line removed to prevent signal conflicts during speed measurement. Only one fan connected will support full PWM control and speed monitoring. This design ensures stable operation when multiple fans are used, as simultaneous speed sensing from different fan types may cause detection issues on the motherboard. Item Name: 4-Pin Fan Extension Cable Material: PVC Features: Durable, 1-to-3 design, compatible with 3-pin and 4-pin fan interfaces, computer accessory Length: 26cm / 10.24 inches (approx) Note: The cable has one 4-pin connector and two 3-pin connectors. Only one fan can be monitored for speed and controlled via PWM; the other fans will run in parallel based on the same power and control signal but without individual speed feedback. Due to variations in lighting and screen settings, the actual product color may differ slightly from images. Slight dimensional differences may occur due to manual measurement. Package Includes: 1 x 4-Pin Fan Extension Cable