In the event the hashrate of the despatched mining device is lower than 300TH/s, BITMAIN will refund the real variation Based upon $/T. Following managing electricity-hungry S19 models For many years, switching on the S21e XP Hyd 3U was like breathing fresh new air. I requested three from antminers23hyd.com https://buybitmainantminer73849.blogitright.com/39721074/antminer-s19-pro-buyer-facts