39 sd card labels explained

Understanding SD Card Speeds, Types and Important Symbols UHS-I cards are limited to a theoretical maximum speed of 104MB/s and are cheaper to manufacture. UHS-II SD cards are faster and theoretically capable of reaching speeds up to 312MB/s. UHS-I card on the left, UHS-II card on the right. There are two ways to distinguish between UHS-I and UHS-II SD cards. Understanding the Naming Conventions and Labels of SD and ... The SD Association is responsible for marketing and labeling different classifications, features and specs for memory cards. There’s a list of different classifications such as standards and speed classes that are labeled on both the packaging and memory card itself, but it can be a bit confusing to sort through the jargon to understand what they really mean.