NM-A281 – Lenovo G50-45
The Lenovo G50-45, Lenovo 80E3, Lenovo G50-45MB and Lenovo G50-70 are built on the NM-A281 board designed by LCFC. The catalog lists 19 files for it: 13 BIOS files, 5 schematics and 1 EC firmware image.
Revisions seen in file names: 1.0. The BIOS dumps are 8 MB images. ODM project names: ACLU5, ACLU6 and ALCU6. First posted in January 2017 in BIOS Archive, Cyberlan Electronics and Schematics & Boardviews Archive.
BIOS dumps 13
Schematics 5
EC / KBC firmware 1
From the uploader
ACLU5/ACLU6 NM-A281 REV:1.0
CPU: EM6010IUJ23JB AMD E1-6010
GPU: none
KBC: IT8586E FX
lenovo G50-45
model 80E3
ACL U5/ ACL U 6
NM-A281 REV:1.0 2014-03-17
CPU A8
LENOVO G50-45-80E3
SN PF0ELQ48
MTM 80E301XJRK
DATE 15/11/28
FID JVHFC1
MO PF9XB5B28068
ACLU5/ACLU6 NM-A281 REV 1.0
PN 5B20F77206
2014-03-17
BARCODE
1069731900125
45103512057
ACLU6 10F2
1I_2015-10-19
MAC 507B9D5199A2
25Q64FVSIG(UC5)
BIOS A2CN40WW(V2.08)
EC A2EC40WW(V2.08)
UUID 76EAA0C4-7608-11E5-BA4C-507B9D5199A2
OS LICENSE SDK0J91176 WIN
OA3 KEY ID 3274320488334
OA2 N
AMD A4-6210
Board facts
| Board number | NM-A281 |
|---|---|
| Designed by | LCFC |
| Platform group | NM-A |
| ODM project | ACLU5, ACLU6, ALCU6 |
| Revisions | 1.0 |
| BIOS chip size | 8 MB |
| Flash chip | 25Q64FVSIG |
| EC / KBC chip | IT8586E |
| Graphics | discrete GPU |
| First seen | 2017-01-26 |
| Source channels | BIOS Archive, Cyberlan Electronics, Schematics & Boardviews Archive, BIOS Skema Boardview Laptop |
| 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-A281
- Lenovo G50-45
- Lenovo 80E3
- Lenovo G50-45MB
- Lenovo G50-70
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.
EC (embedded controller) firmware runs the keyboard controller, power sequencing, battery charging and fans. Depending on the board it lives in a separate chip (ENE KB9012, ITE IT85xx, Nuvoton NPCE) or inside the main SPI image, so check which applies before flashing.
Tools to open these files
| Format | What it is | Open with |
|---|---|---|
| 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
Who designed the NM-A281 board?
NM-A281 is an LCFC board number used by Lenovo.
Is there a boardview for NM-A281?
No boardview has been indexed for NM-A281 yet; the schematic is available on this page.
What BIOS chip size does NM-A281 use?
The BIOS images for NM-A281 are 8 MB. Flash chips named in the files: 25Q64FVSIG.
Which laptops use the NM-A281 board?
Files in the catalog link NM-A281 to the Lenovo G50-45, Lenovo 80E3, Lenovo G50-45MB and Lenovo G50-70.
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.