Awhile ago I did a blog post on the speed of the new UHS-II SD cards when used in a Fuji X-T1 These cards dramatically increase write speed in a camera, like the X-T1, that can take advantage of their new technology, but the ability to read from the cards at a faster rate was hampered by the unavailability of a UHS-II card reader that could transfer the data into a computer. All that has changed, as currently there are two UHS-II readers on the market that can read these cards and transfer the data at a much higher rate over a USB 3.0 line.
SanDisk Extreme Pro SDHC/SDXC UHS-II Card Reader/Writer:
One device is made by Sandisk, the company that introduced the faster SD card. It is the SanDisk Extreme Pro SDHC/SDXC UHS-II Card Reader/Writer. It reads SD cards only and plugs directly into a computer USB 3.0 port. The Sandisk reader is available for $39.99
Delkin Devices USB 3.0 Dual Slot SD UHS-II and CF Memory Card Reader:
The other available device is the Delkin Devices USB 3.0 Dual Slot SD UHS-II and CF Memory Card Reader. It has the advantage of being able to handle both SD and CF cards -- and can read them simultaneously. The Delkin reader is available for $34.99.
Both reader/writers can trasfer data over a USB 3.0 port at speeds up to 500 MB/s, which is 10 times faster that USB 2.0. And both are backward compatible to USB 2.0 technology.
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