Compare to Antminer APW3++, Antminer APW7 Power Supply is 1800w at the input voltage of 220v, which can take more powerful miner, and safer.Compare to Antminer APW3++ 93.5% conversion effeciency , Antminer APW7 PSU is 95% conversion efficiency, which mean APW7 save more electricity fee.Perfect Design for Antminer S9, Z9mini, Z9, L3++, D9, T9 and other brand miners Perfect function for protecting Miners, when circut is malfunction or power supply has higher inside temperature, it will shut off automatically to protect antminer.