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FlexATX

motherboard form factor

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General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionAug 26, 2025
Entity authorityQ1981678 ↗
Source-derived summary

FlexATX is a motherboard form factor derived from ATX. The specification was released in 1999 by Intel as an addendum to the microATX specification. It uses a subset of the motherboard mounting holes required for microATX and the same I/O plate system as ATX and microATX.

FlexATX specifies that a motherboard be no larger than 9 × 7.5 in (229 × 191 mm), and can have no more than three expansion slots.

The term is used also for the form factor of a power supply unit (PSU) that is smaller than a standard ATX PSU and is used in small cases that host a FlexATX or Mini-ITX motherboard or in thin rackmount servers such as 1U racks.

Further reading

"FlexATX Addendum Version 1.0 to the microATX Specification Version 1.0" (PDF). Intel Corporation. 12 March 1999. Archived from the original (PDF) on 2016-04-18.

"FlexATX Thermal Design Suggestions, Version 1.1" (PDF). Intel Corporation. 19 May 2000.

Editorial summary

The public source identifies “FlexATX” as motherboard form factor. This brief keeps that definition visible, then builds a research path around FlexATX, motherboard and form.

Editorial reviewA practical starting point whose main value is the path it opens into stronger specialist and primary sources. The current lead gives the account dated anchors—1999, 2016, 2000—that can be checked directly. The selected authority fields contribute no independent date. Its value is orientation rather than verdict, with FlexATX, motherboard and form providing the first useful test.
Editorial analysis

Why this record matters

A short description can identify a subject without explaining its stakes. For “FlexATX”, the useful work is to connect “motherboard form factor” to the records capable of establishing context and consequence.

Evidence profile

Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Aug 26, 2025. The linked authority identifier is Q1981678. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1999, 2016 and 2000.

Critical limits

Overview language is designed for orientation and should not be treated as a substitute for the evidence cited beneath it. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.

Best used for
  • Subject orientation
  • Search vocabulary
  • Locating named sources
Verify next

The closest primary source, responsible institution and strongest cited specialist reference.

Three-step research path

  1. Establish the record: confirm the title “FlexATX”, its source revision and the description used here.
  2. Expand the search: follow FlexATX primary sources, FlexATX archive and FlexATX research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

  1. Which source most directly establishes the central claim about “FlexATX”?
  2. What terminology or title could unlock a more precise catalogue search?
  3. Which institution is responsible for the underlying evidence?
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Source & attribution

This entry incorporates text from “FlexATX” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.