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Note: The S21 and T21 control boards have the same appearance, but the firmware is not universal. Please confirm carefully when purchasing.
Welcome to choose the brand new Bitmain S21 control board. Its control board version is Ctrl_C76 or Ctrl_C81, and the main control chip is Amlogic A113D. By replacing the faulty S21 control board, fault problems such as the inability of S21 miners to view IP, inability to enter the miner's backend, and inability to detect hash boards can be effectively solved, thereby helping miners resume normal operations. Once a control board failure is discovered, it is recommended that you replace it immediately to reduce failure losses caused by downtime. We sell brand new and original S21 control boards with high quality and guaranteed quality. Welcome to inquire and purchase.
