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Kingdra Overclocking Control Board for ALL Antminer S19j

  • Kingdra overclocking control board can achieve 60%+ hashrate increase for all S19j at efficiency ratio lower than 31.5j/Th. It applies to all S19j
  • Overclocking solution to S19j with A113D control board
  • Overclocking performance better than competitors
  • Easy installation and disassemble process. 2 mins needed only for each S19j through a reversible process. Plug and play, no other action required.
  • No commission on the firmware. Available for future upgrade and customization for large mining farms




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If you are not 100% satisfied with your purchase for any reason, just contact us and we'll be happy to provide a FREE pre-paid return label for any order shipped within the contiguous United States (lower 48 states). Return your order to us within 30 days of when the order was shipped, and we'll process a refund back to the original payment method.

Kingdra Overclocking Control Board for ALL Antminer S19j

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