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. Model BHB68606.

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.