2.0 error ipod popup usb

weird ipod usb error message

I keep getting this popup when I plug in my ipod, and as far as I know, both of my USB ports are 2.0.  At first I thought that maybe one port was 2.0 and the other was 1.1, but I switched which port the ipod was plugged into, and the same error happened.  It still synchs just fine, maybe it’s a glitch.