[ GLOSSARY DEFINITION ] Storage

U3 speed

A video speed class for 4K recording on SD cards.

Also known as: U3 rating

Full Definition & Technical Explanation

U3 speed — A video speed class for 4K recording on SD cards.

This storage term is part of the CompareTech technical dictionary and helps you read specifications, comparisons, and benchmark data across its device database.

See also: A1 speed A2 speed.

Related Technical Terms

A1 speed
An SD card speed class for apps. Storage
A2 speed
A faster SD card speed class for apps. Storage
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