Fan Simulator
Fan Simulator is a device that tricks an ASIC miner into thinking its cooling fans are running at normal speed, enabling the use of more efficient cooling methods without triggering safety shutdowns or error messages. It is a 4-in-1 speed controller, and each S21 miner requires only one unit commonly used to upgrade the S21 air-cooled miner to a water-cooled system or to install a silencer.








