Roland POP Expansion Board SR-JV80-01. 

The Roland , , , , and  synths from the JV series can be expanded with one SR-JV80 wave expansion board, as can the  and the .

The  and  can accept up to two SR-JV80 boards.

The , , , , , and  can accept up to four expansion boards.

The  can accept up to eight SR-JV80 expansion boards.