Antminer S17e hash board is made up of 15 voltage domains in series, each 9 ASIC chips connected in parallel is a domain, and the domain voltage is about 1.2V. Each domain of the S17e hash board has 2 1.8V LDO tubes and 2 0.8V PLL tubes, which together supply power to 9 chips in each domain. For more information on the S17e hash board, please watch the Antminer S17e hash board repair tutorial video.