In anticipation of demo-ing an S900 at a Sam Ash, I took my PSR 3000 thumbdrive with me. It worked beautifully in the S900. My custom registrations had no problem linking to onboard styles, multi-pads, pedal assignments and all the other tweaks in volumes, mixes, voices, etc. Third party styles and midi files on the thumbdrive were all recognized by the S900 without a hitch.

Eddie