LA-B331P – Dell Latitude 7350
LA-B331P is the Compal main board used in the Dell Latitude 7350. ChambersDesignInc.com has indexed 5 files for this board — 3 BIOS files, 1 schematic and 1 boardview.
Revisions seen in file names: 1.0. The BIOS dumps are 8 MB images. ODM project name: ZAU70. The earliest file dates from August 2020 (BIOS Archive, Schematics & Boardviews Archive and Cyberlan Electronics).
BIOS dumps 3
Schematics 1
Boardviews 1
Board facts
| Board number | LA-B331P |
|---|---|
| Designed by | Compal |
| Platform group | LA-B |
| ODM project | ZAU70 |
| Revisions | 1.0 |
| BIOS chip size | 8 MB |
| Flash chip | 25Q64FV |
| First seen | 2020-08-05 |
| Source channels | BIOS Archive, Schematics & Boardviews Archive, Cyberlan Electronics |
| About the number | Compal board numbers start with LA- for main boards and LS- for daughter boards. |
Laptops that use LA-B331P
- Dell Latitude 7350
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.
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 |
|---|---|---|
| .cad | .cad boardview | FlexBV, OpenBoardView or BoardViewer |
| 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
What BIOS chip size does LA-B331P use?
The BIOS images for LA-B331P are 8 MB. Flash chips named in the files: 25Q64FV.
Is there a boardview for LA-B331P?
Yes, 1 boardview file in .cad format.
Who designed the LA-B331P board?
LA-B331P is a Compal board number used by Dell.
Which laptops use the LA-B331P board?
Files in the catalog link LA-B331P to the Dell Latitude 7350.
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.