Lenovo IdeaPad 320-15IKB Schematic & Boardview – LCFC NM-B451 UMA Schematic & Boardview 02/01/202001/31/2020 by notebook Schematic & Boardview for Lenovo IdeaPad 320-15IKBLaptop/Notebook. LCFC NM-B451 UMA Mainboard Tag: EG521/EG522 NM-B451 UMA Rev: 0.2 Format: PDF Total Pages: 60 File Size: 3.54MB Content Type: VIP II (Corporative Membership Only)