K21 Project Code – Compatible Laptop Motherboards

K21 Project Code is documented on 3 indexed laptop motherboard schematics. Find board numbers, models, CPU/GPU platforms and direct schematic discussion links. Examples include Apple Inc. 820-3023, Apple Inc. 820-3023, Apple Inc. 820-3057.
Project Code compatibility index

K21

Every laptop motherboard in the Dr-Bios schematic archive documented as using K21. Narrow the list by any part these boards share, then open the matching schematic thread.

Project Codebrowse this category

Motherboards using K21

Extracted from the structured technical table of each indexed schematic thread. Click any row to open it.

3 of 3 motherboards
Motherboard Board number Project code CPU platform GPU Open
apple macbook air a1369 820-3023-a schematic Apple Inc. · rev 3.13.0 820-3023 K21 K78_MLB —
apple 820-3023 schematic Apple Inc. · rev 3.13.0 820-3023 K78_MLB K21 —
apple k21 lio 051-8933 4.1.0 schematic Apple Inc. · rev 4.1.0 820-3057 K21 Intel CPU Sandy Bridge SFF 2C+2F —
No motherboard in the loaded list matches that filter.
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