Write a 500 MB file to a USB 3.0 socket with Transcend 32GB SDHC card lasts 44s, reading 24s.
This means in the worst case a 32 GB card just takes forty-five minutes to describe. That's many times faster with USB 3.0.
Of course you would rather have a 2014 USB 3.0 have standard, but the reader also works as a USB 2 good unless you have to edit data flooding.