In short: Laptop brands do not build their own motherboards — factories called ODMs do, and each ODM has its own numbering scheme. LA-xxxxP is Compal, NM-xxxx is LCFC (Lenovo), DA0xxxMBxxx is Quanta, a five-digit number with a dash is Wistron, 6050A… is Inventec, 60NB…-MB… is ASUS, MS-xxxxx is MSI and 820-xxxxx is Apple.
Why the factory matters
HP, Dell, Lenovo and Acer design the product, but the board is engineered and manufactured by an ODM (original design manufacturer). Documentation is produced by the ODM in the ODM’s format, which is why the factory decides both the board number style and the boardview file type you will be looking for.
Reference table
| ODM | Number format | Example | Usual boardview format | Seen in |
|---|---|---|---|---|
| Compal | LA- + 4 characters + P |
LA-E891P, LA-K371P | .cad |
HP, Dell, Acer, Lenovo, Toshiba |
| LCFC (Lenovo–Compal venture) | NM- + letter + 3 digits |
NM-B452, NM-D191 | .cad, .brd |
Lenovo IdeaPad, ThinkPad, Legion |
| Quanta | DA0 + 3-character project code + MB + suffix |
DA0X8BMB6F0, DA0LX6MB6G2 | .brd, .cad, .bdv |
HP, Acer, Dell, Lenovo |
| Wistron | 5-digit number + - + revision, plus a project name |
17806-1, 09259-1M | .brd, .cad |
Dell, Lenovo, Acer, HP |
| Inventec | 6050A + 7 digits |
6050A2945701 | .brd, .tvw |
HP, Toshiba |
| ASUS / Pegatron | 60NB + 4 characters + -MB + 4 digits |
60NB0QJ0-MB5101 | .fz, .asc |
ASUS, some Lenovo and Acer |
| MSI | MS- + 4–5 characters |
MS-16J91, MS-7B86 | .tvw, .bvr |
MSI laptops and desktops |
| Apple | 820- + 4–5 digits (+ letter) |
820-00165, 820-3437-B | .brd |
MacBook, iMac, Mac mini |
| Samsung | BA41- + 5 digits + letter |
BA41-02206A | .brd, .pdf only |
Samsung |
| Sony | MBX- + 3 digits |
MBX-247 | .bdv, .brd |
Sony Vaio |
| Clevo | 6-71- + project code |
6-71-N85H0-D02 | .bvr, .tvw |
Clevo, Sager, Gigabyte / Medion rebrands |
Reading the numbers
Compal LA-xxxxP. The four characters are a running design number; newer boards have a letter in first position (LA-E…, LA-K…, LA-M…). The schematic cover also shows a project code such as CDL50.
Quanta DA0xxxMBxxx. The three characters after DA0 are the project code, which is also the name on the schematic (X8B, LX6, ZRT). The characters after MB encode the layer count and revision. Searching the project code alone often finds more files than the full string.
Wistron xxxxx-x. The first two digits of the five-digit number follow the design year (17806-1 dates from 2017). Wistron boards also carry a project name — often a person or place name such as “Bucky” or “Astro” — and that name is what the schematic file is usually called.
Apple 820-xxxxx. Older boards have four digits and a letter revision (820-3437-B), newer ones five digits (820-00165, 820-02020). The companion number starting with 051- is the schematic’s own document number.
Brand-level part numbers are different
Stickers on the board carry the brand’s spare-part number: HP xxxxxx-001 / -601, Lenovo FRU 5B20…, Dell CN-0xxxxx. Those identify a stocked assembly — board plus CPU and options — and are useful for buying a replacement, not for finding a schematic. If the sticker number is all you have, search it anyway: uploaders sometimes include it in the file name.
Finding files once you know the number
Enter the number in the search, or browse the board index, which groups every recognised number by ODM family. If nothing turns up for the full number, try the project code or the shorter base number without the revision.