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You know how lots of phone manufacturers say their devices are “expandable up to 2TB of storage over microSD”? Well, today SanDisk is getting us a little closer to that mark, with a new 400GB microSD card that now claims the title of the world’s largest storage capacity for the memory card format.

Not only is SanDisk’s 400GB monster the biggest yet, it beats out the previous record holder — Samsung’s 256GB card from last year — by a considerable margin. On the more technical side of things, the 400GB card can transfer files at up to 100MB/s, is classified as a SDXC UHS-I card, and is rated as an App Performance Class A1 device (i.e., it’ll run apps well).

As is always the case with these ultra-high storage products, there is a catch — a…

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