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I refused to believe this coin-sized gadget was a storage drive, until I tried it for myself

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SanDisk ExtremeFit USB flash drive ZDNET's key takeaways The ExtremeFit is available in storage options from 64GB ($15) up to 1TB ($110).

It's positively tiny, with file transfer speeds of up to 400MB/s.

When not plugged in, it can easily get lost in a drawer or backpack. $14.99 at B&H Photo-Video

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Remember when the name "thumb drive" was an accurate descriptor? These days, external storage devices are increasingly tiny -- and nowhere is this more evident than in the new SanDisk ExtremeFit USB-C flash drive.

It's definitely the smallest thumb drive I've tested, measuring 0.73 inches at its widest point and weighing just three grams. It looks more like a USB dongle for a mouse than external storage.

Also: I found a portable SSD that's a dream travel accessory for iPhone content creators

The ExtremeFit's size isn't the only thing going for it, though. It also offers a wide range of storage options, ranging from 1TB for $109 to 64GB on the low end for just $15.

It's fast, too. SanDisk promises USB 3.2 Gen 1 speeds of up to 400MB/s on the 128GB and 1TB versions, with compatibility across Windows, MacOS, and iPadOS. I went hands-on with the 64GB storage option, and got read and write speeds in CrystalDiskMark that came very close to the 400MB/s mark -- certainly fast enough for everyday use.

Kyle Kucharski/ZDNET

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