Refurbished gear is examined for just about any visual defects, and mud off any visual dust and debris the miner may have. The longevity of an ASIC miner has an effect on very long-phrase profitability. Look at models noted for robust development and reliability underneath steady operation. Antminer and MicroBT https://zanderqlfwh.thenerdsblog.com/45182798/used-asic-miner-for-sale-what-to-expect