Dell · laptop motherboard

Dell Latitude 3540 LA-A491P

SchematicBoardviewBIOS
Board code
LA-A491P
Platform
ZAL00
Made by
Compal
Revisions
Rev 0.3, Rev 1.0
Files
7
Updated

Dell Latitude 3540 LA-A491P is a laptop motherboard designed by Compal and used in the Dell Latitude 3540 and Dell L3540.

The catalog has 2 schematics, 1 boardview file and 4 BIOS files for it, posted between 2017 and 2023 across 3 Telegram channels. Each download button opens the original Telegram post.

File names mention 2 board revisions (Rev 0.3 and Rev 1.0). Check the revision printed on your PCB before relying on a boardview or flashing a BIOS dump — How to Open .FZ Boardview Files explains why it matters.

The boardview comes in .BDV and .CAD format. .CAD files usually need FlexBV or the viewer they were exported for; OpenBoardView handles .BRD, .BDV and .FZ. See OpenBoardView: Installation and First Steps.

With both a schematic and a boardview you can find a net on the diagram and then locate the same part on the board by its reference designator. No Boardview for Your Board? How to Work Without One shows the workflow.

BIOS notes: some archives also hold EC/KBC firmware. Read and save the original chip contents before you write anything to it — Keeping the Windows Product Key (MSDM) When Reflashing a BIOS.

Also listed under platform ZAL00.

Compatible models

  • Dell Latitude 3540
  • Dell L3540

Files for Dell Latitude 3540 LA-A491P

Schematics 2 All schematics →

Boardview files 1 All boardview files →

BIOS and firmware 4 All bios and firmware →

Notes from the source posts

  • Diego seren

Frequently asked questions

Which laptops use the LA-A491P motherboard?
File names in the catalog tie LA-A491P to the Dell Latitude 3540 and Dell L3540. Laptops sold under one model name can use different boards, so confirm by the code printed on the motherboard.
Which revision of LA-A491P do I have?
Files for this board mention Rev 0.3 and Rev 1.0. The revision is printed on the PCB silkscreen, usually next to the board code. Pick files with the same revision when you can; if yours is not listed, the closest revision is usually fine for the schematic but check part positions in the boardview carefully.
How do I open the LA-A491P boardview file?
The boardview for LA-A491P is available as .BDV and .CAD. .BDV usually opens in OpenBoardView (free) or FlexBV. .CAD usually needs FlexBV or the matching viewer. See What Is a Boardview File and Why You Need One.
What should I check before flashing the LA-A491P BIOS?
Read the original chip with a programmer and save two copies before writing anything. Some archives include EC/KBC firmware, which may need to be written to a separate chip. A dump from another board carries that board's serial number and MAC address, so restore yours from the backup.

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Files are hosted on Telegram by third parties; ExcitingSpas.com only links to public posts. Check that a file matches your board before using it. Disclaimer · Report a file