High quality PWM fan extension cable, offers greater flexibility to position Motherboard and CPU Fans for optimal cooling, for extending fan cables in your case. Black sleeved nylon braided cable, more durable and make the inside of pc case looks more clean & tidy. The cable is one 4-pin female connector to 4-pin male connector, suits for CPU or PC case fan. Easy to plug, the fan extension cable offers greater flexibility between Motherboard and CPU cooling fans. 4-Pin male to female fan extension cable, compatible with 4pin PMW fan connector and 3pin fan connector.