NM-B551 – Lenovo ThinkCentre M920Q
NM-B551 is the LCFC main board used in the Lenovo ThinkCentre M920Q, Lenovo ThinkCentre EQ370 and Lenovo ThinkCentre M720Q. The catalog lists 4 files for it: 4 BIOS files.
File names mention revision 1.0. BIOS images are 8 MB and 16 MB. ODM project name: EQ370. The earliest file dates from October 2021 (BIOS Archive).
BIOS dumps 4
Board facts
| Board number | NM-B551 |
|---|---|
| Designed by | LCFC |
| Platform group | NM-B |
| ODM project | EQ370 |
| Revisions | 1.0 |
| BIOS chip size | 8 MB, 16 MB |
| First seen | 2021-10-28 |
| Source channels | 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-B551
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.
Tools to open these files
| Format | What it is | Open with |
|---|---|---|
| .rar | RAR archive | 7-Zip or WinRAR |
| .bin | BIOS image inside the archive (usually .bin) | a CH341A, XGecu T48 / TL866II Plus or RT809H programmer |
Questions
Who designed the NM-B551 board?
NM-B551 is an LCFC board number used by Lenovo.
What BIOS chip size does NM-B551 use?
The BIOS images for NM-B551 are 8 MB and 16 MB.
Which laptops use the NM-B551 board?
Files in the catalog link NM-B551 to the Lenovo ThinkCentre M920Q, Lenovo ThinkCentre EQ370 and Lenovo ThinkCentre M720Q.
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.