NM-E401 – Lenovo S574
The Lenovo S574 is built on the NM-E401 board designed by LCFC. 2 files are indexed for this board: 1 BIOS file and 1 boardview.
File names mention revision 1.0. First posted in September 2025 in Schematics & Boardviews Archive, Cyberlan Electronics and BIOS Archive.
BIOS dumps 1
Boardviews 1
From the uploader
LENOVO S574 NM-E401 REV 1.0 UB2 & UB3
FREE FOR CHANNEL)
Board facts
| Board number | NM-E401 |
|---|---|
| Designed by | LCFC |
| Platform group | NM-E |
| Revisions | 1.0 |
| First seen | 2025-09-04 |
| Source channels | Schematics & Boardviews Archive, Cyberlan Electronics, 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-E401
- Lenovo S574
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 |
|---|---|---|
| .bdv | Honhan .bdv boardview | OpenBoardView, FlexBV or Honhan BoardViewer |
| .rar | RAR archive | 7-Zip or WinRAR |
| .tvw | Tebo-ICT .tvw boardview | FlexBV or Tebo-ICT View |
| .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
Are these files free?
1 of the posts are marked VIP or paid in their source channel; the others are ordinary posts. ChambersDesignInc.com does not host or sell files.
Is there a boardview for NM-E401?
Yes, 1 boardview file in .bdv and .tvw format.
Who designed the NM-E401 board?
NM-E401 is an LCFC board number used by Lenovo.
Which laptops use the NM-E401 board?
Files in the catalog link NM-E401 to the Lenovo S574.
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.