The JV-80 and JV-880 are compatible with the PN-JV80 Parameter Cards, SO-PCM1 Waveform Cards, and SR-JV80 Expansion Boards. In addition to these, the waveform card of the SL-JD80 card sets can be read by the JV-80 and JV-880.
* The SR-JV80, PN-JV80, SO-PCM1 and SL-JD80 series cards are no longer available.
Owner's Manual: https://www.roland.com/us/support/manual_archive/