PWM one-to-three connection cable, 26cm in length. Protective fan interface design allows easy parallel connection of 4-pin PWM temperature control fans. Maximizes the use of limited 4-pin fan headers on the motherboard by supporting up to three 4-pin or 3-pin fans. Two of the fan connectors have the tachometer (speed) signal line removed to prevent signal conflicts during speed monitoring. Only one fan connected will support full PWM control and speed measurement. This ensures stable operation when connecting multiple fans, as mismatched fan speeds can cause detection issues on the motherboard, rendering PWM and speed sensing functions inactive on affected ports. Item Name: 4-Pin Fan Extension Cable Material: PVC Features: Durable construction, 1-to-3 design, compatible with 3-pin and 4-pin fan interfaces, computer cooling accessory Length: 26cm / 10.24 inches (approx.) Note: The splitter includes one 4-pin connector and two 3-pin connectors. Only one fan should be used for speed sensing and PWM control. Additional fans will run synchronously based on the primary fans performance for effective thermal management. Due to differences in lighting and screen settings, the actual product color may vary slightly from images. Slight dimensional variations may occur due to manual measurement. Package Includes: 1 x 4-Pin Fan Extension Cable