Acer · laptop motherboard

Acer 5520 ICW50 LA-3581P

SchematicBIOS
Board code
LA-3581P
Platform
ICW50
Made by
Compal
Revisions
Rev 1.0, Rev 2.0
Files
3
Updated

Acer 5520 ICW50 LA-3581P is a laptop motherboard designed by Compal and used in the Acer 5520 ICW50 and Acer Aspire 7520G-502G50MI.

The catalog has 1 schematic and 2 BIOS files for it, posted between 2019 and 2022 across 3 Telegram channels. Each download button opens the original Telegram post.

File names mention 2 board revisions (Rev 1.0 and Rev 2.0). 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 schematic is a PDF; the first pages usually hold the block diagram and the power sequence. New to schematics? Start with How to Use a Schematic and a Boardview Together.

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 ICW50.

Compatible models

  • Acer 5520 ICW50
  • Acer Aspire 7520G-502G50MI

Files for Acer 5520 ICW50 LA-3581P

Schematics 1 All schematics →

BIOS and firmware 2 All bios and firmware →

Notes from the source posts

  • ENE KB926QF B1
  • EON F80-100HCP SOIC-8

Frequently asked questions

Which laptops use the LA-3581P motherboard?
File names in the catalog tie LA-3581P to the Acer 5520 ICW50 and Acer Aspire 7520G-502G50MI. Laptops sold under one model name can use different boards, so confirm by the code printed on the motherboard.
Which revision of LA-3581P do I have?
Files for this board mention Rev 1.0 and Rev 2.0. 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.
What should I check before flashing the LA-3581P BIOS?
Read the original chip with a programmer and save two copies before writing anything. 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