Bitmain manufactured gear can do the job for a very long time until finally a new version is required. In such cases, the very long-time period dependability of Antminer Z15 will come in handy. two.The warranty only relates to the first purchaser who procured the system directly from BITMAIN. https://cashskzna.tribunablog.com/bitmain-antminer-z15-pro-in-stock-buy-today-54593664