
This reader operates at the maximum speed of the USB 3 port to which it is connected. I measured a large (6.7GB) file transfer at 120MB/s, which is the write speed limit for the SD card I was testing with. When reading on my PC after trying to clear the Windows 10 cache, I measured a read speed of 250MB/s. Read speeds for many small files on the dSLR range from 120 to 130 MB/s. It's hard to beat that performance with a reader this affordable. I've decided to deduct a star because there's no dust cover, but that doesn't seem fair because it doesn't affect performance. However, I really hope that the manufacturer decides on a removable cover for the reader.

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