This is the first 120mm Dual CCFL Fan Kit in the world that Logisys brought into the market in response to the growing needs of large and silent fan for cooling and modding purposes. The kit comes with dual CCFL rings with separate power inputs from the specially designed inverter, which is bright enough to light up or illuminate the entire chassis. It also comes with on and off switch on the PCI back panel for CCFL controlling. The 120mm fan is clear and quiet with much large air flow than traditional 80mm fan. It can be powered from either 4pin or 3 pin plugs.