Compatibility and Capacity

SD Card has backward compatibility between card and host devices.

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UHS Bus Interface for Large Size Data Transfer




Good for burst shooting in large size photo, faster data transfer in combination with UHS host devices.

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SD Express, Revolutionary Innovation for SD Memory Cards

Long Version

Short Version

SD Express and microSD Express, adding the popular PCI Express® and NVMe™ interfaces to the legacy SD interface.

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Speed Class Standards for Video Recording

SD Express Speed Class

Video Speed Class

UHS Speed Class

Speed Class

All speed class types assures minimum sequential card access performance under a given conditions. Mainly applicable for video recording but not only.

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App Performance Class for Running Smartphone Apps

Application Performance Class A1

Application Performance Class A2

The App Performance Classes assure minimum random and sequential performance speeds to meet both run and store execution time requirements under given conditions.

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