Dell · laptop motherboard

Dell OptiPlex 3020 12125-1M

SchematicBoardviewBIOS
Board code
12125-1M
Platform
Wistron DIH81R
Made by
Wistron
Files
11
Updated

Dell OptiPlex 3020 12125-1M is a laptop motherboard designed by Wistron and used in the Dell OptiPlex 3020, Dell Inspiron 3647 DIH81R, Dell OptiPlex 3020 DIH81R-TIGRIS and Dell D3020 and 1 more.

The catalog has 4 schematics, 1 boardview file and 6 BIOS files for it, posted between 2019 and 2024 across 3 Telegram channels. Each download button opens the original Telegram post.

The boardview comes in .CAD format. .CAD files usually need FlexBV or the viewer they were exported for; OpenBoardView handles .BRD, .BDV and .FZ. See How to Open .PCB and .CAD Boardview Files.

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.

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 Wistron DIH81R; codes 12125-2.

Compatible models

Files for Dell OptiPlex 3020 12125-1M

Schematics 4 All schematics →

Boardview files 1 All boardview files →

BIOS and firmware 6 All bios and firmware →

Frequently asked questions

Which laptops use the 12125-1M motherboard?
File names in the catalog tie 12125-1M to the Dell OptiPlex 3020, Dell Inspiron 3647 DIH81R, Dell OptiPlex 3020 DIH81R-TIGRIS, Dell D3020 and Dell DIH81R. Laptops sold under one model name can use different boards, so confirm by the code printed on the motherboard.
How do I open the 12125-1M boardview file?
The boardview for 12125-1M is available as .CAD. .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 12125-1M 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