Features: The Control Board is expertly for M20S M21S M30S M31S Miners, ensuring optimals performances and stability for your mining operations. Featuring optimized circuit design, this board enhances computational efficiency and energy consumption ratio, boosting your mining profitabilities. Suitable for miners and investors seekings to most their mining hardware returns, as well as DIY enthusiasts with a knack for hardware assembly and upgrades. Perfect for miners setups at homes or in small studios, and for large scale mining farm management to improve overall operational efficiency. It effectively prevents overheating and extends the lifespans of your equipment, making it for development and testing environment. Specifications: Component:PCB Size:Approx.10x7cm/3.94x2.76inch Suitable for M20S M21S M30S M31S Miners Package Includes: 1pc Control Board note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.