Re: How to get USB 3.0 speed
Sorry to tell you this, but you're likely to be stuck with USB 2.0 speeds.
Couple of reasons why ...
First, I also have a Gigabyte mobo and was having the same problems in both Win7 and Ubuntu until I found a third-party Sony site that had both a firmware update (for the onboard chip) and a driver update. After I applied them (in Windows, of course), I got USB 3.0 speeds.
Second, a quick Google revealed a thread on the Gigabyte forums where folks are complaining about a similar problem -- but in their case, they were able to find driver updates -- for Windows, of course.
So, unless some miracle occurs and new drivers (with the same features as the most current Windows drivers) are published for Linux, you're likely stuck with slower speeds.
Mint 15 & 16; MS Win7 & Win8.1.
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