SD Speed Class

Scope and location

Minimum sequential-performance class symbols and same-family host/card matching under defined conditions.

Speed-class families and Best Combination between Speed Class Host and Card

Open the original source

Inspected

2026-10-07

Access

public page

Recorded AI-assisted source inspection; not independent human approval or hardware testing.

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.

Source inspection is separate from independent technical approval, rights clearance and hardware testing.