No Warranty: A lot of used devices are sold with no guarantee, leaving buyers with tiny recourse if the gear fails shortly after purchase. As of these days, mining BTC with ASIC components below a hashrate beneath TH/s is totally unfeasible and useless, but The good thing is we have https://refurbished-antminer-z1585173.blogkoo.com/z15-miner-for-sale-explained-simply-58457730