Ideapad 3-15ITL6 NHS460 HS560 HS760 NM-D471 BIOS GGCN28WW IdeaPad 3-14ITL6 - NM-D471 - NM-D472 - NM-D474 Schematic And BoardView DB.pdf NM-D471 - NM-D472 - NM-D474.pdf NM-D471 REV1.0.tvw NM-D472 REV1.0.tvw USB.pdf