I give up. I bought a 512 meg thumb drive for my PSR 3000, and it won't even accept 100 megs. This is a different model, than the one i tried before, with the same results. I have to put half of my midi files onto a Smart Media card or another thumb drive. At least i was succesful getting my registrations on the jump drive. It just does'nt make sense that the keyboard would limit the megs for a jump drive. I get a message that the drive does not have any memory left, but there is over 400 megabytes left. Anybody have the solution? Bob Lee