NM-A251 – Lenovo ThinkPad T450
The NM-A251 (LCFC) motherboard is found in the Lenovo ThinkPad T450. ChambersDesignInc.com has indexed 12 files for this board — 9 BIOS files, 3 schematics, 1 boardview and 1 EC firmware image.
File names mention revision 1.0. BIOS images are 16 MB. ODM project name: AIVL0. First posted in August 2018 in BIOS Archive, Schematics & Boardviews Archive and Cyberlan Electronics.
BIOS dumps 9
Schematics 3
Board facts
| Board number | NM-A251 |
|---|---|
| Designed by | LCFC |
| Platform group | NM-A |
| ODM project | AIVL0 |
| Revisions | 1.0 |
| BIOS chip size | 16 MB |
| Flash chip | W25Q128FV |
| Graphics | UMA (integrated) |
| First seen | 2018-08-21 |
| 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-A251
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 |
| .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
Is there a boardview for NM-A251?
Yes, 1 boardview file in .bdv format.
Who designed the NM-A251 board?
NM-A251 is an LCFC board number used by Lenovo.
Which laptops use the NM-A251 board?
Files in the catalog link NM-A251 to the Lenovo ThinkPad T450.
What BIOS chip size does NM-A251 use?
The BIOS images for NM-A251 are 16 MB. Flash chips named in the files: W25Q128FV.
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.