Thank you for the reply, I'm trying mailing them asking for providing strong asic, Let's hope!
Rix

Hi,
   I'm newbie, I hope I'm writing in the right session...  two years ago I bought a gridseed usb just for learning and now i'd like to buy a more serious machine. I've seen the strong STU-U/6 but I'm really really confused on where to buy. There're a lot of eseller and everywhere I look seems to be scam, has poor reference, no score, so I ask you: where did you buy yours? the productors isn't a good idea as it sells 25 pc lot at a time... time's running and crypto too, but not in my wallet . There has to exist a trusted list of seller, am I wrong? Or at least one trusted multibrand seller.  Help to anyone share his advice.
Rix