This article is from the CD-Recordable FAQ, by Andy McFadden (firstname.lastname@example.org) with numerous contributions by others.
RCD-202 (?x1/64K;SCSI, based on the JVC XR-W1001)
RCD-1000 (2x2/1MB;SCSI, based on the JVC XR-W2001)
RCD-5040 (4x2/1MB;SCSI, based on the JVC XR-W2010)
RCD-4X4 (4x4/1MB;SCSI, based on the Teac CD-R50S)
The -1000, -5020, and -5040 models are flash ROM upgradeable.
RCD-1000 units shipped after Sept 1995 can do audio extraction if they have
firmware v2.35 or later. An upgrade is available from their BBS.
If you are getting "servo tracking error", "seek error", or "track
following error" with a 5040, see the notes in the JVC XR-W2010 section.
CAVEAT EMPTOR - all drives. Pinnacle customer support is reported to be
almost nonexistent, except for some recent tech support via e-mail. Many
owners of the RCD-5040 are perfectly happy with their drives (see the
caveat on the JVC XR-W2010), but most of the stories about Pinnacle's
product support are negative.
Pinnacle earned a bad reputation after shipping drives with buggy firmware,
a poorly ventilated enclosure, and bad customer support. Some owners of
the RCD-1000 have gotten the unit to work, others have given up in despair.