It is often used for computer case fan connection line, so that three computer fans share one interface, and can be connected to small 4-pin or small 3-pin fans.This wire has a small 4Pin interface, and 4 wires can actually be used. Because the big 4Pin interface is a power supply wire, only 2 wires are needed, so only two wires are used.High-quality black casing cable, braided wire has good durability and long service life.Purpose: CPU plug (3Pin/4Pin) is not enough, or the motherboard 3Pin/4Pin interface current is not enough, etc. Mainly to extend and expand the motherboard 3Pin/4Pin interface.Save money. With a Molex plug, you can power 4 chassis fans and help you organize your wires better. This will minimize the number of Molex cables you need to put in the protective sleeve.1x Power CableMaterial:Oxygen-free CopperLength:Approx.27cm/10.62inchesColor:BlackInterface type: Big 4PinConverter type: HUB/hubWire model: 1007 24AWGConductor specification: 11x0.12TSConductor material: tinned copperWire outer diameter: OD1.4mmRated temperature: 80Product voltage: 12VProduct interface: one end is a large 4Pin D-type connector for the power supply, and the other four ends are a fan 4Pin interfaceProduct function: make the computer motherboard CPU fan use the big 4Pin interface to supply power1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order.2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.Thanks for your understandings.