Model Antminer Z15 from Bitmain mining Equihash algorithm with a maximum hashrate of 420ksol/s for a power consumption of 1510W. Product is original and seccond used but working well, and the miner is not for amateurs. Please contact with us if need any technology support. Model Z11 include Bitmain power supply, and the miner required input voltage is 220V. Wrong input voltage may make miner damaged.