How to find your laptop motherboard number
When you look for a schematic, the laptop model name is only half the story. One model can ship with two or three different boards (Intel or AMD, with or without a dedicated GPU, new revisions), and one board is often used in several models — sometimes from different brands. The board number printed on the PCB is what identifies the right file.
Where to look on the board
Remove the bottom cover and look at the silkscreen text on the motherboard — usually near the RAM slots, along an edge or under the battery connector. You're looking for a code in one of the formats below, often next to a revision like REV 1.0 or r1A.
| Manufacturer | Format | Example |
|---|---|---|
| Compal | LA-xxxxP (main), LS-xxxxP (small boards) | LA-D801P — Dell Inspiron 15 5567 |
| LCFC (Lenovo) | NM-xxxx | NM-A161 — ThinkPad Edge E540 |
| Quanta | DA0 + project + MB + suffix | DAZAARMB6E0 — Acer Aspire E5-576G |
| Inventec | 6050A + 7 digits | 6050A2548201 — HP 15-J |
| Wistron | 5 digits + revision, or 48.4xxxx.xxx | 12209-1 / 48.4XB01.011 — Lenovo B590 |
| Apple | 820-xxxxx | 820-00244 — MacBook A1534 |
| Asus | Model + REV, part no. 60Nxxxxx-MBxxxx | X541UV REV 2.0 — 60NB0CG0-MB4101 |
| MSI | MS-xxxx (laptops 16xx/17xx, desktop 7xxx, GPU Vxxx) | MS-7C02, MS-V389 |
| Clevo | 6-71-xxxxx | 6-71-P65S0 |
| Samsung | BA41-xxxxxA | BA41-01091A |
Without opening the laptop
- Windows: open Command Prompt and run
wmic baseboard get product,manufacturer,version. Some brands report the real board code, most report the model — still useful to narrow down. - Linux:
sudo dmidecode -t baseboardshows the same information. - Service manual: for business lines (Latitude, ThinkPad, EliteBook) the service manual often lists the board FRU and codename.
- Search by model here — the results usually show every board used in that model, with the board number next to each file.
Revision matters
Boards get revisions (r1.0, r2.0, REV A…). Differences are often small, but component positions and values can change. If there is a file for your exact revision, use it; otherwise the nearest revision is usually close enough for diagnosis — just double-check anything you measure.
Alfred Founder & curator
Hi, I'm Alfred. For more than ten years I've been writing software that collects and organises data — scrapers, catalogues, automation pipelines. Repair documentation turned out to be the perfect mess to clean up.
The files you find here were collected by the community in the Telegram channel @schematicslaptop. Great archive, terrible search. I wrote a parser that reads every file name, recognises the brand, the ODM manufacturer (Compal, Quanta, Wistron…) and the board number, and turns it into pages you can actually search and browse.
I don't host the files — every download button leads to the original Telegram post, so the credit stays with the people who shared them. If something is sorted wrong or a file is missing, write to me and I'll fix it.