BITMAIN Antminer units come with warranty coverage provided by BITMAIN. We are not responsible for the warranty; therefore, customers are required to proactively contact BITMAIN’s official website, where dedicated personnel will assist you. The power cord was NOT INCLUDED in the package originally. Please use 220-277V Voltage; wrong input voltage may probably cause miner damage. Specifications Product Glance Model S21 Algorithm | Cryptocurrency SHA256 | BTC/BCH/BSV Hashrate, TH/s 200 TH/S ± 3% Power on wall @77°F(25°C), Watt 3500 W ± 5% Power efficiency on wall @77°F(25°C), J/TH 17.5 J/TH ± 5% Detailed Characteristics Power Supply Power supply AC Input voltage, Volt(1-1) 220~277 V Power supply AC Input Frequency Range, Hz 47~63 Hz Power supply AC Input current, Amp(1-2) 20(1-3) Hardware Configuration Networking connection mode Ethernet 10/100M Miner Size (Length*Width*Height, w/o package), inches(2-1) 15.75 x 7.68 x 11.42 inches Miner Size (Length*Width*Height, with package), inches(2-1) 22.45 x 12.45 x 16.93 inches Net weight, lbs(2-2) 33.96 lbs Gross weight, lbs(2-2) 37.92 lbs Environment Requirements Operation temperature,°F 32~113 °F Storage temperature,°F -4~158 °F Operation humidity(non-condensing) , RH 10~90% Operation altitude, m(3-1) ≤2000