Every miner from NiceAsicMiner includes a check online video in advance of delivery so you can take a look at what it seems like when you receive it. When you have not been given your refund however, be sure to Examine your Paypal or copyright account 1st. It may just https://bitmain-antminer-s21-pro12949.blogerus.com/56615341/bitmain-antminer-s19-an-overview