Just a heads up … I was a batch one customer… I also had a PSU that went defective after a week of run time. Bitmain did everything they said they would… They sent me a replacment PSU for ALL batch 1 units and also sent me 10 day mining compensation for the unit that died … It took a while to get resolved, but in the end, they did everything they said they would . I have 4 S4's and honestly with the latest firmware, I have no complaints . I would have no issue buying another S4 …

I also have 1024 coupons for the S3… if ANYONE wants a free coupon send me your Bitmain ID and I will give you a coupon free of charge . There is no way I will buy 1024 S3's as much as I would like to, I just don't have the funds .