NM-A451 – Lenovo ThinkPad P50
NM-A451 is the LCFC main board used in the Lenovo ThinkPad P50 and Lenovo ThinkPad P50-XEON. ChambersDesignInc.com has indexed 6 files for this board — 5 BIOS files and 1 schematic.
Revisions seen in file names: 0.3, 1.0 and 0.1. BIOS images are 16 MB. ODM project name: BP500. The earliest file dates from April 2021 (BIOS Archive, Schematics & Boardviews Archive and Cyberlan Electronics).
BIOS dumps 5
Schematics 1
Board facts
| Board number | NM-A451 |
|---|---|
| Designed by | LCFC |
| Platform group | NM-A |
| ODM project | BP500 |
| Revisions | 0.3, 1.0, 0.1 |
| BIOS chip size | 16 MB |
| First seen | 2021-04-07 |
| Source channels | BIOS Archive, Schematics & Boardviews Archive, Cyberlan Electronics |
| 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-A451
- Lenovo ThinkPad P50
- Lenovo ThinkPad P50-XEON
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.
Tools to open these files
| Format | What it is | Open with |
|---|---|---|
| .rar | RAR archive | 7-Zip or WinRAR |
| .zip | ZIP archive | 7-Zip, WinRAR or the built-in Windows extractor |
| .bin | BIOS image inside the archive (usually .bin) | a CH341A, XGecu T48 / TL866II Plus or RT809H programmer |
Questions
What BIOS chip size does NM-A451 use?
The BIOS images for NM-A451 are 16 MB.
Is there a boardview for NM-A451?
No boardview has been indexed for NM-A451 yet; the schematic is available on this page.
Who designed the NM-A451 board?
NM-A451 is an LCFC board number used by Lenovo.
Which laptops use the NM-A451 board?
Files in the catalog link NM-A451 to the Lenovo ThinkPad P50 and Lenovo ThinkPad P50-XEON.
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.