The product features of Bitmain Antminer S21 are as follows: High Hash Rate: The rated hashrate is 200TH/s with a fluctuation of ??3%, which allows it to complete a large number of hash calculation tasks per unit time, improving mining efficiency and increasing the potential for mining rewards. Low Power Consumption: The power consumption is 3500W ?? 5% at 25??C, and the power – efficiency ratio is 17.5J/TH ?? 5%. This enables it to effectively control power consumption, reducing mining costs and enhancing profit margins. Advanced Chip Technology: It adopts advanced 5nm chip technology, which optimizes the circuit architecture, improves computing power, and significantly enhances power efficiency. Good Heat Dissipation Performance: It is equipped with two high – performance fans and adopts an optimized air – cooling system design, which can effectively reduce the working temperature of the equipment, ensure stable operation under high load, and extend the service life of the equipment. The operating noise is 76dB. Compact Design: The size without package is 400x195x290mm, and the net weight is 15.4kg. It takes up little space, which is convenient for transportation and installation, and is suitable for various mining scenarios. Specific Algorithm Support: It adopts the SHA – 256 algorithm, which is suitable for mining cryptocurrencies such as Bitcoin (BTC) and Bitcoin Cash (BCH). Convenient Network Connection: It has an RJ45 Ethernet 10/100M interface, which is convenient for integration into the existing network, enabling remote management and monitoring, and facilitating users to view device status and adjust mining parameters at any time. Wide Operating Range: The operating temperature range is 0 – 45??C, and the operating humidity (non – condensing) is 10 – 90%, which can adapt to a variety of environmental conditions. When used at an altitude of 900m to 2000m, the highest operating temperature decreases by 1??C for every 300m increase.