As fan control via the Mainboard with a PWM fan is much more affordable than a fan controller, this cable is perfect to give more flexibility.The extension cable is sleeved with a black mesh which additionally protects the cable and looks great! This further expands the lifespan of the cable. The ends towards the connectors are fixated with heatshrink for a clean finish.A white marking on one of the split cables shows from which cable the rpm signal is transmitted.