Guide note · not an individual product specification
The useful distinction
Understand the requirement.
The SD Association separates capacity families, interface bus rates and speed classes. Speed-class symbols concern defined minimum sequential performance under specified conditions; a capacity label is not a speed promise. [C076A]
Bounded facts, visible unknowns
Specifications and limits
SD capacity, bus speed and speed class facts and limitations
The exact host-required class symbol is more useful than a generic fast-card claim. If the symbols differ, read the documentation rather than assuming equivalence.
AI-assisted inspection is not independent engineering review. Source scope and access limitations are disclosed below. Procedural checklists are editorial requirements, not hardware measurements.
C076ASource checked · pending review
The SD Association separates capacity families, interface bus rates and speed classes. Speed-class symbols concern defined minimum sequential performance under specified conditions; a capacity label is not a speed promise.
Locator: Capacity ranges, file-system table and Form Factor Size rows Access: public page. Nominal card envelopes are identification aids, not mechanical tolerances, socket footprints, pad positions or formatting instructions.
Locator: Bus interface table; duplex explanation; final speed caveat Access: public page. Specified bus modes and distinction from measured card performance.
Locator: Speed-class families and Best Combination between Speed Class Host and Card Access: public page. Bus modes and performance classes are distinct. Shared numeric minima across different class symbols do not guarantee the requested host class; no particular video mode is approved.
Claim scope: Named standard or manufacturer description only; procedural checks are editorial recommendations, not hardware tests.. Next review due 2026-12-30.
Assessment 2026-10-22 · earliest scheduled source review 2026-12-30. This is a recorded-date assessment, not a live source check. Page-level independent review is not established by this panel.
SD Association · Standards-organization domain · inspected 2026-10-07 · due 2027-01-05
Within inspection window
Scoped support: SD capacity/file-system classes and nominal full-size SD and microSD envelopes; not host capacity approval.
Not established / limitations: Nominal card envelopes are identification aids, not mechanical tolerances, socket footprints, pad positions or formatting instructions.
Locator: Capacity ranges, file-system table and Form Factor Size rows
SD Association · Standards-organization domain · inspected 2026-10-07 · due 2027-01-05
Within inspection window
Scoped support: Minimum sequential-performance class symbols and same-family host/card matching under defined conditions.
Not established / limitations: Bus modes and performance classes are distinct. Shared numeric minima across different class symbols do not guarantee the requested host class; no particular video mode is approved.
Locator: Speed-class families and Best Combination between Speed Class Host and Card
Trace 1 claims to their source records
C076A · P076
The SD Association separates capacity families, interface bus rates and speed classes. Speed-class symbols concern defined minimum sequential performance under specified conditions; a capacity label is not a speed promise.
Claim scope: Named standard or manufacturer description only; procedural checks are editorial recommendations, not hardware tests.
Recorded evidence only. An inspection date, publisher label, source link or generated packet is not independent technical review, hardware testing, fabrication approval or a compatibility verdict.
