Alesis QuadraSynth Plus Reference Manual page 48

Overview: Chapter 4
However, this requires that you "store over," losing whatever was previously in
that location. If you don't want to lose any of the sounds in the User bank, you
should back-up the entire bank to either an external SRAM or FlashRAM
PCMCIA card, or (via MIDI System Exclusive) into a data storage device like the
Alesis DataDisk or a MIDI sequencer. See Chapter 9 for more information on
external storage operations.
QuadraSynth Plus Piano Reference Manual 49