Lenovo ThinkPad X390 Schematic – Wistron LBB-1 18729-1 Schematic 01/10/202109/29/2020 by notebook Schematic for Lenovo ThinkPad X390 Laptop/Notebook, Wistron LBB-1 18729-1 Mainboard Tag: LBB-1 MB 18729-1 Rev: -1 Format: PDF Total Pages: 99 File Size: 4.42MB $18.00 $9.90 – Add to Cart Checkout Added to cart