Focus: The warranty period of time for control boards with symbol is 150 days (calculated through the date of shipment), and those devoid of logo will not be protected from the warranty. The board has everything currently mounted except the CPU chip, such as the DDR and flash chips, and https://antminer-controll-boards62937.buyoutblog.com/37408202/facts-about-antminer-l9-control-board-revealed