How to Buy an SD Card: Speed Classes, Sizes, and Capacities Explained
 

Memory cards are used in digital cameras, music players, smartphones, tablets, and even laptops. But not all SD cards are created equal — there are different speed classes, physical sizes, and capacities to consider.

Different devices require different types of SD cards. Here are the differences you’ll need to keep in mind when picking out the right SD card for your device.

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