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Portable flash memory has never been more versatile, and you will be pleasantly surprised by the widespread availability of high-speed, large-capacity microSD and SD cards these days. In this guide, we explain all the speed classes, plus give you handy buying recommendations.
If it's been a while since you've bought portable flash memory, you might be surprised by the broad availability and affordability of high speed, high capacity microSD cards. Commonly used to expand the storage in devices ranging from smartphones to drones, microSD cards are becoming more frequently purchased than any other SD form factors, although full sized cards remain popular among digital camera owners.