Wanting to add more fans to your computer, but don't have any extra 3 pin fan headers on your motherboard? Useone of these! The ELECTOP Molex to 3 Pin Fan Adapter will convert any Molex power lead from your power supply to power for your new fan. NOTE: fans will spin at 100% as there is no 4th pin to control the speed. This will also NOT power RGB lights on the fan - only the fan itself.