Cable Matters (2-Pack) PWM 3-Fan Splitter Cable with Molex Power - 1 Foot PWM FAN SPLITTER CABLE connects 3 computer PWM fans with Pulse Width Modulation speed control to a single power supply; Practical cable eliminates the need for a separate fan controller; Molex PSU fan connection provides power and a PWM motherboard connection provides fan speed regulation MOLEX POWER LP4 power connection provides supplemental power to the fans instead of relying on the motherboard; Practical solution for a motherboard with a single PWM fan port MOBO 4-Pin receptacle connects to the 4-pin header on the motherboard and splits the signal to 3 PWM fans; Fans can spin at the same speed using software from a motherboard equipped with PWM control; Install a gaming rig with extra fans to operate quietly and kick in for cooling when overclocking PWM FAN PLUGS connect to a CPU fan and 2 case fans; 4-pin fan plug has a green wire that sends the RPM signal to the motherboard connector for synchronizing the fan speed with the other 2 fans; 3-pin fan connectors omit the RPM signal pin and slave to main fan; Cost-effective 2-Pack provides or spare or replacement cable PWM FAN COMPATIBLE with popular brands of computer case cooling fans including ARCTIC F8 PWM Rev. 2 Fluid Dynamic Bearing / F12 120mm, Corsair Air Series AF120 / Series SP120 Twin Pack, Cooler Master Sleeve Bearing 120mm / CM Silencio FP120 PWM 2400 / Blade Master 92 / Blade Master 120 Hyper 212 EVO 120 / JetFlo 120 2-Pin or 3-Pin fans do not have speed control (check your pin locations for compatibility) Check the specifications of your PWM fan and motherboard for compatibility CPU Fan Plug: 4-Pin Male Case Fan Plugs: 2 x 3-Pin Male Motherboard PWM Header: 4-pin Female Molex PSU: LP4 2-pin Male Max Power Rating: 18W Cable Length: 11.8 Inches Plug directly into a spare Molex power cable Power your fans from a single motherboard header Cool your computer case without drawing power from your motherboard Connect 3 fans to a single Mobo plug PWM fan speed control must be supported by the motherboard to regulate the fan speed 4pin PWM case fan compatible will run at the same speed (slaved) as 4pin fan when supported by the motherboard Molex PSU Connector: LP4 2-Pin Male Mobo PWM Header: 4-Pin Female Case Fan Plugs: 2 x 3-Pin Male Main Fan Plug: 4- Pin Male