NM-D451 – Lenovo ThinkPad T14
The NM-D451 (LCFC) motherboard is found in the Lenovo ThinkPad T14, Lenovo ThinkPad T14 Gen 2 and Lenovo ThinkPad T14S Gen 2. ChambersDesignInc.com has indexed 7 files for this board — 2 BIOS files, 3 schematics, 2 boardviews and 1 EC firmware image.
Revisions seen in file names: 1.0 and 2.0. The BIOS dumps are 32 MB images. The earliest file dates from January 2023 (Cyberlan Electronics, Schematics & Boardviews Archive and BIOS Archive).
BIOS dumps 2
Schematics 3
Boardviews 1
EC / KBC firmware 1
Board facts
| Board number | NM-D451 |
|---|---|
| Designed by | LCFC |
| Platform group | NM-D |
| Revisions | 1.0, 2.0 |
| BIOS chip size | 32 MB |
| First seen | 2023-01-08 |
| Source channels | Cyberlan Electronics, Schematics & Boardviews Archive, BIOS Archive |
| About the number | LCFC is Lenovo's joint venture with Compal; its main boards use NM- numbers and sub-boards NS- numbers. |
Laptops that use NM-D451
- Lenovo ThinkPad T14
- Lenovo ThinkPad T14 Gen 2
- Lenovo ThinkPad T14S Gen 2
What these files are for
A BIOS dump is a full image of the board's SPI flash chip. It is written back with an SPI programmer when the original firmware is corrupted, after a chip replacement, or to recover from a failed update. Read and save the original chip first: serial number, DMI data and the Intel ME / AMD PSP state differ between boards.
A schematic is the circuit diagram of the main board: power rails, power-up sequence, component values and net names. It is the reference for measuring voltages and tracing a fault.
A boardview is the component placement map of the PCB: click a part or a net and the viewer highlights where it is and what it connects to. Used together with the schematic to find test points.
Tools to open these files
| Format | What it is | Open with |
|---|---|---|
| .bdv | Honhan .bdv boardview | OpenBoardView, FlexBV or Honhan BoardViewer |
| PDF schematic | any PDF reader; Sumatra PDF and Foxit handle large schematics well | |
| .rar | RAR archive | 7-Zip or WinRAR |
| .tvw | Tebo-ICT .tvw boardview | FlexBV or Tebo-ICT View |
| .bin | BIOS image inside the archive (usually .bin) | a CH341A, XGecu T48 / TL866II Plus or RT809H programmer |
Questions
What BIOS chip size does NM-D451 use?
The BIOS images for NM-D451 are 32 MB.
Which laptops use the NM-D451 board?
Files in the catalog link NM-D451 to the Lenovo ThinkPad T14, Lenovo ThinkPad T14 Gen 2 and Lenovo ThinkPad T14S Gen 2.
Is there a boardview for NM-D451?
Yes, 2 boardview files in .bdv and .tvw format.
Who designed the NM-D451 board?
NM-D451 is an LCFC board number used by Lenovo.
Where do the download links go?
Each button opens the original public Telegram post the file was shared in. ChambersDesignInc.com only indexes and cross-references those posts.