The PN-D10 Expansion cards are compatible with the Roland D-10, D-20, and D-110 synthesizers.
The following cards were produced:PN-D10-01 Unique D-Sounds
Patches for the Roland D-series can be stored on the M-256D RAM card, which has 32 kilobytes of memory.
Other manufacturers have created cards for the Roland D-10/20/110 series of synthesizers. For example, the "Digital Synths" and "New Age" cards, produced by Sound Source Unlimited.
The "Voice Crystal" series by Eye & I Productions was also popular.
There was also the "LA Synthesis Best Choice Sound Library", "Music Pack", and "Source Live Sound Vol. 1" cards.
Roland Pn-d10-01 ($129.38)
Roland PN-D10-02 ($90)
Roland PN-D10-03 90's ($177.15)