Whatsminer hash board universal test fixture can test M20 series, M21 series, M30 series, M31 series, and m50 series hash board failures, that is, all ASIC chips of KF1960 and below. Such as KF1921, KF1930, KF1950, KF1922, KF1958, KF1920, etc. By quickly finding the location of the faulty ASIC chip, it is possible to accurately determine whether the miner's power board is faulty, significantly improving miners' maintenance and operation efficiency.