my camcorder is a sony HC65, it does have the mini plugs for fire wire and USB 2. My computer has two USB 3 plugins so I bought a USB 3 cable, one end plugs into USB 2 receptical but the other end fits nothing I can find. I looked at the 3.0 cables on line and they do not seem to have the shape of the USB 2 mini jack, it sure doesn't look like it would retro fit. Doing 20 to 40 gig files is not uncommon in video editing. USB 3 is ten times faster than USB2 and would sure be nice to use.