The PWM fan splitter connects 2 computer fans to one motherboard fan header, used to install more fans to keep the PC cool. Compatible with all 4 pin and 3 pin case fans. Easy to use and install, the fan splitter extension cable offers greater flexibility and durability. All black sleeved nylon braided cable, more durable and make the inside of pc case looks more clean and tidy. Sleeved in black braiding with a 4 pin female connector at one end and splits to 2 male (1 of them is 4pin, the other one is 3pin ) connectors at the other end. Easy to plug, the fan extension cable offers greater flexibility between motherboard and CPU cooling fans, the ergonomic design of the extension cord offers you a greater flexibility to position your PWM or fans inside your internal case. Converter type: Adapter Network engineering: wiring accessories Connection cable: power cord Home improvement project: computer Applicable equipment: personal computer Model: 1 small 4pin package network Type: patch cord Interface type: small 4pin Process: cold pressing Product weight: 0.010 (KG) colour:Black Material:Copper + nylon size:30cm Package Contents: 3 x 1 to 2 PWM Fan distributor cable Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.