Bitmain Antminer S21 Hashboard
€570,00
Free shipping
30-day-return
5.000+ Satisfied customers
Product information
Replacement hashboard for the Antminer S21 151TH (can be used for other TH models as well), original Bitmain part. Used to repair a miner with a faulty board instead of replacing the whole unit.
The S21 runs three hashboards delivering 151 to 200 TH/s combined at ~17,8 J/TH, roughly 50 TH/s per board.
Check firmware and PSU before installation. Run a self-test via the miner interface after the swap.
Bitmain Antminer S21 Hashboard
What customers say
5, 000+ satisfied customers and trusted by thousands of homes across Europe.
Verified
The app (iOS) is well made and feels intuitive, the heater itself is very quiet even when running at its maximum power. I have using it for 5 days now and so far I'm very happy. I almost never write reviews but this company deserves to get recognition
Daniel Garcia
January 14, 2026
Verified
Excellent service as always! Thank you again 😊
JonnyW
February 5, 2026
Verified
Had an error at first but to be fair they did everything to rectify it and put it right and more
andrew ferguson
April 2, 2026
Verified
Perfect ! I receive everything and travel was long. Thx to all team !
Vivien Gaillard
January 8, 2026
Verified
Top Support 👍
Alex Tornyossy
March 23, 2026
Verified
all good, works well, good support.
Fredrik Åhslund
December 22, 2025
Verified
Ofen 2 is good product and there is a good service support. The product is well designed and well manufactured. I got a minor bug issue at the beginning with the thermostat. Support solved it very quickly with an update.
Jidé Jidé
December 4, 2025
Verified
Awesome Team. Had a great conversation with a customer service agent, helped me understand the inner workings of mining!
Remington Splettstoesser
September 24, 2025
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