Hi, This S19 J Pro currently running on Braiins OS for improved efficiency (see screenshot for details). The unit can be tuned further depending on your needs—either underclocked for better energy efficiency or overclocked to achieve higher hash rates (TH/s).This one is missing one board, so will not reach 120TH.Feel free to reach out if you have any questions or would like more information! Any questions please let me know!
eBay