Older devices could operate louder and hotter, which may be problematic when you’re mining at your home or in tiny spaces. Once i spoke with Sharma, he said that if this transpires Bitmain will however ship the ASICs, which can be used to mine other cash using the CryptoNight algorithm. https://trevorcsgsc.ttblogs.com/18354601/what-does-used-bitcoin-miners-for-sale-mean