Originally posted by cassp:
I would hope the USB2's are backward compatible and support USB1 at their slower speed. USB2 is a higher speed standard and maybe that is why you are having problems.
USB 2.0 IS backward compatible with USB 1.0/1.1. A USB 1 or USB 2 Pen Drive or Thumb Drive should have no bearing as to its ability to work on a Keyboard such as the PSR 3000 or not.
What really counts on the Yamaha PSR 3000 or Motif ES, i.e. [those keyboards that can utilize external USB storage devices] is whether the Pen Drive or Thumb Drive, etc. requires a "Hub" Driver or not. At least on Yamaha ones. If it requires a Hub Driver it will NOT work on the PSR 3000.
A great little Thumb Drive that WILL work for certain on the PSR 3000 or Motif ES is the Lexar USB 2.0 Jump Drive 512 Mb.
I know; I have one and it worked flawlessly on my former Motif ES7. It should work flawlessly on a PSR 3000 too.

As would the 256 Mb Lexar Jump Drives. Etc., etc...
Best regards,
Mike