If defective on arrival, the buyer will get a full refund promptly and no return of your miner is needed. Immediately after coping with electrical power-hungry S19 products for years, switching to the S21e XP Hyd 3U was like respiratory contemporary air. I purchased three from antminers23hyd.com and all https://buy-antminer78566.dailyhitblog.com/44972565/what-to-expect-when-buying-a-bitmain-antminer