This is a new APW12 Bitmain Original PSU compatible with all Bitmain Antminer 19 series miners For Bitmain Antminer T19, S19 & S19 PRO. Please contact with us if need any technology support. Keep a few spare PSUs on site so that you keep your rigs up and running 24/7/365. Lost time is lost profits. If your machine is a special model of the S19 series (S19JL, S19JPEOL, S19JPRO-A, S19A, S19APRO, L7), please let us know so that we can arrange the correct model.