The Antminer 19 series conductive copper bar is mainly used to connect the Antminer 19 series hash board to the power supply. There are three connection points between the power supply and the miner, and the conductive copper bar is one of them. Before powering on, please carefully check that the copper plug is fully inserted into the card slot. Suppose the copper plug may not be fully inserted into the card slot due to improper installation, etc. In that case, it is recommended that you manually press or reinstall it to ensure that the copper plug is fully inserted into the slot. Also, before powering on, please ensure that the screws of each conductive copper bar are tightened; otherwise, the miner will not be able to supply power normally.