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docs(heatsink-6540b): correct dimensions to 65x40x10mm and add Cubie A7A (V3.0) compatibility - #2064

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Milir-Radxa merged 2 commits into
radxa-docs:mainfrom
tangzz-radxa:docs/heatsink-6540b-v3-a7a-20260826
Aug 26, 2026
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docs(heatsink-6540b): correct dimensions to 65x40x10mm and add Cubie A7A (V3.0) compatibility#2064
Milir-Radxa merged 2 commits into
radxa-docs:mainfrom
tangzz-radxa:docs/heatsink-6540b-v3-a7a-20260826

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@tangzz-radxa

@tangzz-radxa tangzz-radxa commented Aug 26, 2026

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Summary

Update the Heatsink 6540B documentation (both docs/ and i18n/en/):

  1. Correct dimensions: 65 x 40 x 10 mm (was incorrectly listed as 60 x 40 x 12 mm)
  2. Clarify version: V3.0 refers to the heatsink version (not a Cubie A7A version); the latest version V3.0 supports the ROCK 5C and the Cubie A7A
  3. Add version check link: point users to the product page so they can identify which heatsink version they have
  4. Installation guide note: the guide uses the ROCK 5C as an installation example. Note that the fan connector differs between the ROCK 5C and the Cubie A7A, so the guide does not claim the same steps apply to the A7A.

Background

This came from a support discussion where a user pointed out that the 6540B (v3.0) is compatible with the Cubie A7A but the installation guide only covered the ROCK 5C. Confirmed with the hardware team:

  • Heatsink 6540B dimensions: 65 x 40 x 10 mm
  • Latest version V3.0 supports ROCK 5C and Cubie A7A
  • Users can verify their heatsink version at https://radxa.com/products/accessories/heatsink-6540b#overview
  • The installation guide uses the ROCK 5C as an example; the fan connector on the Cubie A7A differs from the ROCK 5C

Ref: #2063

…A7A (V3.0) compatibility

- Update heatsink dimensions from 60x40x12mm to 65x40x10mm
- Clarify that the latest version V3.0 supports ROCK 5C and Cubie A7A
- Link to the product page so users can verify their heatsink version
- Note in the installation guide that ROCK 5C is used as an example;
  the same steps apply to Cubie A7A (V3.0)

Ref: radxa-docs#2063
@tangzz-radxa
tangzz-radxa requested a review from a team as a code owner August 26, 2026 03:53
…on guide is ROCK 5C example only

- V3.0 refers to the heatsink version, not a Cubie A7A version
- Fan connector differs between ROCK 5C and Cubie A7A, so the guide
  only uses ROCK 5C as an installation example
@Milir-Radxa
Milir-Radxa merged commit 08e83a7 into radxa-docs:main Aug 26, 2026
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2 participants