Antminer D7 control board is usually a spare element for repairing ASIC D7 miner, it is actually used to repair and replace a defective control board that is not operating and working correctly. Conveniently address the downtime caused by the control panel and restore the conventional Procedure from the miner. https://antminercontrollboardsfor63704.ampblogs.com/the-definitive-guide-to-antminer-controll-boards-74195421