Bitmain Antminer S19j pro for BTC Bitcoin Asic Miner Machine The new s19j pro antminers have exceeded 104t hashes in performance! It's time to force competitors in the mining of bitcoin to swallow the dust far behind, this ASIC will bring excellent income, and most importantly, it will mine a reserve of bitcoins before the rate increases. S19J PRO - reliability itself with a proven SSP with overheating / voltage surge protection, with a fast cooling system - it can work around the clock without overheating. The efficiency and stability of Bitmain has been proven by a dozen models. NOTE: 1. To prevent the spread of virus in the firmware, which can cause damage to the ANTMINER S19 series, the setting function of “Secure Boot” has been switched on and the “Root Authority” function has been disabled. 2. If the user fails to use the product in accordance with the given instructions, specifications, and conditions provided, or change the function setting without BITMAIN's prior consent, BITMAIN will not be liable for any damage arising therefrom. (1-1) Caution: Wrong input voltage may probably cause miner damaged (1-2）Max condition: temperature 40°C, altitude 0m (1-3) Two AC input wires, 10A per wire (2-1）​​​​Including PSU size (2-2) Including PSU weight (3-1)When the miner is used at an altitude from 900m to 2000m, the highest operating temperature decreases by 1℃ for every increase of 300m