This is the BEST miner for at home bitcoin mining. No special power requirements yet 10+ TH/s performance with SILENCE! this is so quiet i am blown away, z9 mini? sounds like a crazy beast next to this. you will hear more noise from your power supply! its incredible
The R4 has a specially designed horizontal fan that is significantly quieter than any of the other ASIC bitcoin miners. It was designed with home use in mind!!
Since it is a Bitmain ASIC miner, the power cost effectiveness is one of the best out there.
In hand, all chips work and ready to ship immediately.
Please ask all questions before purchasing. No returns due to the nature of BTC.
Thanks for looking!