Easy cable managment - Our cpu fan extension cable gives you greater flexibility between your motherboard and CPU cooling fan by lengthening the pwm fan cable. Perfect for larger enclosures Sleek, durable construction - Each pwm cable extension cord is sleeved in flexible and sturdy braided black nylon to provide long-lasting performance as well as to avoid dust and breakage 3 pin and 4 pin compatible - Each extension cable supports PWM function and speed regulation with a 4-pin female and 4-pin male port, which can also be used for 3-pin cpu fans Even more length - Each fan extension cable is 10.5 inches long for optimum pc fan placement. If you need more length, the pwm fan cable extensions can be daisy chained together to meet your needs Money back guarantee - Were proud of the products we sell. If your pc fan cable extensions fail to meet your expectations for any reason, we will go the extra mile to make things right