NM-B271 – Lenovo ThinkPad X1
The NM-B271 (LCFC) motherboard is found in the Lenovo ThinkPad X1. The catalog lists 2 files for it: 1 BIOS file and 1 boardview.
File names mention revision 2.0. First posted in March 2021 in Cyberlan Electronics, Schematics & Boardviews Archive and BIOS Archive.
BIOS dumps 1
Boardviews 1
Board facts
| Board number | NM-B271 |
|---|---|
| Designed by | LCFC |
| Platform group | NM-B |
| Revisions | 2.0 |
| CPU generation | Intel 3rd gen |
| First seen | 2021-03-19 |
| 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-B271
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 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 |
|---|---|---|
| .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
Is there a boardview for NM-B271?
Yes, 1 boardview file.
Which laptops use the NM-B271 board?
Files in the catalog link NM-B271 to the Lenovo ThinkPad X1.
Who designed the NM-B271 board?
NM-B271 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.