Say goodbye to the days of manual fan speed tuning and experience a transformation in your mining setup as the Njord Cloudline board significantly reduces fan noise and power consumption while maintaining consistent miner temperatures. Enjoy a quieter environment and lower energy costs while optimizing miner performance. To achieve optimal results, pair the Njord Cloudline board with an AC Infinity Fan and a fan shroud. Installing the Njord Cloudline board is a breeze! Simply plug it into the fan port connectors on your miner’s control board. Then, connect the USB-C cable of your AC Infinity fan to the Njord Cloudline’s USB-C socket. The Njord Cloudline board is designed to seamlessly integrate with all air-cooled Bitmain miners equipped with 4 stock fans. Includes 4x fan adapter cables that allows compatibility with new S21 series antminers that have square fan ports on control board. Njord board enables Bitmain miners to automatically control the speed of an inline fan using the control board's native temperature control algorithm. Includes 4x fan adapter cables that allows compatibility with new S21 series antminer.