Hi Chulaivet1966,A blue USB port indicates that it's USB 3. I can't imagine why the scanner didn't like it though, USUB 1 and 2 devices are supposed to work with USB 3 ports. Cheers Kent PG Music
Hey Kent....I remember you....you're that chat help guy!
Yep....I almost mentioned that the 'blue' may have been USB compatibility protocol but I would only be guessing.
Hope all is well....carry on.