Solid Experience with HEX Miners I purchased 20 Antminer S21 Hydro units to fill my 5 Antrack V1s. The order was shipped quickly, I received the tracking number about two days after payment confirmation, and delivery took approximately 8 days with free shipping. So far, everything has gone smoothly. I did encounter an issue with one of the machines, it stopped working. I reached out to support, but by the time they responded, I had already resolved the issue myself. For that reason, I’m giving them 4 stars. That said, HEX Miners is a legitimate and trustworthy company with very competitive pricing. There’s some room for improvement in their customer support response time, but I appreciate their honest advice and straightforward communication. Thank you, HEX Miners!