?PWM FAN SPLITTER?- 1 to 3 PWM fan splitter for 4-pin and 3-pin fans, PC chassis is used for motherboard CPU fan/cooling fan. ?WIDELY COMPATIBLE?- This cable is compatible with all 4 pin and 3 pin case fans.4Pin 1 to 3 Ways PWM Fan Splitter Cable, to realize 3 fans powered by 1 interface with speed regulation. ?DURABLE CONSTRUCTION? - Sleeved in Black Braiding as well as to avoid dust and breakage,With a 4 Pin Female Connector at One End and Splits to 3 Male Connectors at The Other End ( 1 of them is 4pin ,2 of them is 3pin ) ?EVEN MORE LENGTH? - Each fan extension cable is 10.5 inches(27cm) long for optimum pc fan placement. the PWM fan cable extensions can be daisy chained together to meet your needs. ?SERVICE & WARRANTY?- We offer worry-free warranty and friendly customer service within 12 months for your confident purchase. If you are not satisfied with any product, please don/u2019t hesitate to contact us, we will serve you our best.