SD memory card
SD speed class is standard to guarantee SD apparatus and minimum of transfer speed with SD card. Note speed might become slow whenever we repeated usage count with conventional SD card. At SD speed class devised newly, speed above a certain level was guaranteed and was able to have you always use with stable performance. Number displayed in SD speed class shows "the guaranteed lowest transfer speed" each, and Supported Devices is a lot high-speed so that number is high.

Use example of SD Memory Card

※It is assumption example and may not just show performance with SD cards less than class which apparatus requires.

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List of memory card products