SATA power to three (3) x 4pin PWM splitter power adapter cable SATA 15pin to 3 x TX4 male for 3pin & 4pin Fans Only one TX4 female header have full 4 tips.please make sure this header connect fan priority One TX4 female header to motherboard for RPM Feedback & PWM Fan Speed Control Black sleeved jacket for good cable management 43cm / 16.9 inches in cable length For 12V DC fan only, do not utilize for 5V DC fan Compatible with both 4-pin PMW fan connector and 3-pin fan connector Connected 3pin fans no PWM function, will run in full speed