bitmain antminer l7 9500mh z15 miner m21 56th invest in antminer s9 asic s9 se m30s+ asic miners canaan avalonminer 1066 bitmain antminer t17+ rate goldshell kd5 in inventory t19 antminer antminer t17+ 58thYou could lessen the fan speed by positioning your Antminer inside a cooler natural environment. A awesome basement or air-conditioned area migh