This wire was deigned for users looking to take greater control over their graphics card's fans than what the built-in solution allowed. Using this cable you can convert the mini 4-pin connection to any standard 4-pin fan header like an external fan controller or motherboard. Graphics cards with built-in liquid coolers can also take advantage of this cable by gaining greater control over their pump speed. Many industrial fans can also be found with this mini 4-pin connector and can be converted to a standard 4-pin PWM connection.