How to find your laptop motherboard number
Where the board number is printed, how to read Compal, Quanta, Wistron, Inventec and Apple numbers, and how to check it without opening the laptop.
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, later 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(orGet-CimInstance Win32_BaseBoardin PowerShell). 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.
Keep reading
Torry's Delphi Editor & curator
Hi, I'm Torry's Delphi. 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 listed here were collected by the community in the Telegram channel @schematicslaptop, plus a Google Drive archive. 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 search and browse.
Next to the catalogue I keep a small set of practical notes on electronics and PCB work — KiCad libraries, moving designs from Eagle, making prototype boards at home, LCDs and EEPROMs. If something is sorted wrong or a note is unclear, write to me and I'll fix it.