Lenovo · laptop motherboard

Lenovo G400S LA-9902P

SchematicBIOS
Board code
LA-9902P
Made by
Compal
Revisions
Rev 1.0
Files
3
Updated

Lenovo G400S LA-9902P is a laptop motherboard designed by Compal and used in the Lenovo G400S, Lenovo G500S and Lenovo ThinkBook G2.

The catalog has 1 schematic and 2 BIOS files for it, posted between 2018 and 2022 across 3 Telegram channels. Each download button opens the original Telegram post.

The files are marked Rev 1.0; other revisions of the same board can differ in parts and layout.

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.

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.

Compatible models

Files for Lenovo G400S LA-9902P

Schematics 1 All schematics →

BIOS and firmware 2 All bios and firmware →

Frequently asked questions

Which laptops use the LA-9902P motherboard?
File names in the catalog tie LA-9902P to the Lenovo G400S, Lenovo G500S and Lenovo ThinkBook G2. Laptops sold under one model name can use different boards, so confirm by the code printed on the motherboard.
Which revision of LA-9902P do I have?
Files for this board mention 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.
What should I check before flashing the LA-9902P 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