BM2280AA ASIC chip for Antminer K7 hash board High quality BM2280AA ASIC chip for replacing faulty ASIC chip of Antminer K7 miner hash board. When the ASIC chip fails, and the miner has 0 or a low hash rate, it is recommended to replace the faulty chip immediately to ensure the stable operation of the miner. We sell high-quality BM2280AA ASIC chips at a reasonable price. The quality is guaranteed, and the supply is sufficient. Welcome to buy.