This is a new Bitmain Original APW12 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. MODEL: APW12 FREQUENCY: 47-63Hz DC Voltage 1: 12V-15V DC Voltage 2: 12.2V-12.4V OUTPUT: (200-240V input) DIMENSIONS: 254.6mm x 251.6mm x 63mm WEIGHT: 3.6 kg NOISE: 45dBA 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.