Use to, my USB ports worked just fine.  Then all of the sudden they stopped working.  One day they started working again, on my Inspiron 700m, but when I plug anything in I get the "This device can run faster" pop up window.  It says to plug it in to the other 2.0 USB port, I do that and nothing happens.  I checked to see if I actually have 2.0 enhanced and I do.  I read the other post about this but It didn't help.  All of my USB devices run significantly slower now and I was just wandering what I need to do.