Features: Interfaces type 4Pin PWM interfaces: Supports PWM (Pulse Width Modulation) control, which can automatically adjust the fan speed according to the temperature of the CPU or motherboards, improve heat dissipation efficiency and reduce noise. Bilateral with 2 output port: 1 to two allows users to expand one fan socket into two, allowing multiple fan to be connecteds to the same PWM source simultaneously, facilitating wiring and management. Wide compatibility: for most mainstream motherboards, especially in modern chassis, supporting multiple brands and model of fan. Easy to installs: Easy to installs, no additional driver required, just Plugs the adapter cable into the 4Pin PWM interfaces on the motherboards. Stability and durability of materials: wire and connectors to ensures good current transmission capability and improve product durability. Antiinterferences: effectively reduces signal interferences and ensures the normal and stable operations of the fan. Specifications: Materials: PVC Length: 13cm/5.12inch Quantity: 1PC, 3Pcs(optional) Package Includes: 1PC 4Pin PWM Fan Cable note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the picture may not reflect the actual of the item.