Lenovo · laptop motherboard

Lenovo ThinkPad 20NM NM-C181

SchematicBoardviewBIOS
Board code
NM-C181
Platform
FA491
Made by
LCFC
Revisions
Rev 1.0
Files
5
Updated

Lenovo ThinkPad 20NM NM-C181 is a laptop motherboard designed by LCFC and used in the Lenovo ThinkPad 20NM.

The catalog has 1 schematic, 1 boardview file and 3 BIOS files for it, posted between 2021 and 2025 across 3 Telegram channels. Each download button opens the original Telegram post.

The files are marked Rev 1.0; other revisions of the same board can differ in parts and layout.

The boardview comes in .BDV and .TVW format. .TVW files usually need FlexBV or the viewer they were exported for; OpenBoardView handles .BRD, .BDV and .FZ. See OpenBoardView: Installation and First Steps.

With both a schematic and a boardview you can find a net on the diagram and then locate the same part on the board by its reference designator. No Boardview for Your Board? How to Work Without One shows the workflow.

BIOS notes: file names mention 1 MB and 16 MB chip sizes; some archives also hold EC/KBC firmware. Read and save the original chip contents before you write anything to it — Keeping the Windows Product Key (MSDM) When Reflashing a BIOS.

Also listed under platform FA491.

Compatible models

  • Lenovo ThinkPad 20NM

Files for Lenovo ThinkPad 20NM NM-C181

Schematics 1 All schematics →

Boardview files 1 All boardview files →

BIOS and firmware 3 All bios and firmware →

  • X395_T495s_ThinkPad_Type_20NM_FA391_FA491_NM_C181_Rev_1_0_R13ET43W.rar 8.5 MBRev 1.0
    Download from Telegram
  • FA391 FA491 NM-C181 REV 1.0 2019-03-21 AMD CPU WORKING BIOS.rar 5.9 MBRev 1.0
    Download from Telegram
  • FA391_FA491_NM_C181_REV_1_0_2019_03_21_16MB_&1MB_&_KBEC_UNLOCK_IO.rar 16 MBRev 1.0
    Download from Telegram

Notes from the source posts

  • FA391 FA491 NM-C181 REV 1.0 2019-03-21 16MB &1MB & KBEC ( UNLOCK IO ITE_818641_192KB) AMD RYZEN 5 PRO 3500U BIOS
  • You can give us as a gift.

Frequently asked questions

Which laptops use the NM-C181 motherboard?
File names in the catalog tie NM-C181 to the Lenovo ThinkPad 20NM. Laptops sold under one model name can use different boards, so confirm by the code printed on the motherboard.
Which revision of NM-C181 do I have?
Files for this board mention Rev 1.0. The revision is printed on the PCB silkscreen, usually next to the board code. Pick files with the same revision when you can; if yours is not listed, the closest revision is usually fine for the schematic but check part positions in the boardview carefully.
How do I open the NM-C181 boardview file?
The boardview for NM-C181 is available as .BDV and .TVW. .BDV usually opens in OpenBoardView (free) or FlexBV. .TVW usually needs FlexBV or the matching viewer. See What Is a Boardview File and Why You Need One.
What should I check before flashing the NM-C181 BIOS?
Read the original chip with a programmer and save two copies before writing anything. File names for this board mention 1 MB and 16 MB images; the dump size must match your chip. Some archives include EC/KBC firmware, which may need to be written to a separate chip. A dump from another board carries that board's serial number and MAC address, so restore yours from the backup.

Guides for this board

Similar boards

Browse more

Files are hosted on Telegram by third parties; ExcitingSpas.com only links to public posts. Check that a file matches your board before using it. Disclaimer · Report a file