Antminer D7 control board is usually a spare part for repairing ASIC D7 miner, it is utilized to repair and substitute a defective control board that's not operating and working appropriately. Quickly clear up the downtime a result of the control panel and restore the traditional Procedure with the miner. https://marcotfpwd.alltdesign.com/antminer-s9-control-board-schematics-options-56338030