This article is from the CD-Recordable FAQ, by Andy McFadden (firstname.lastname@example.org) with numerous contributions by others.
CR-2200CS (2x2/4MB;SCSI, based partly on the Philips CDD2000)
CR-2201CS (same as CR-2200CS but with 2x2/1MB)
CR-2401TS (4x2/1MB;SCSI, based on the Philips CDD2000)
CR-4802TE (8x4x2/2MB;IDE) and CR-4802TU (USB)
CR-480ATE (40x32x12/2MB;IDE, sometimes referred to as 48xA)
In all unit designations, 'C' means caddy, and 'T' means tray, 'S' is SCSI,
and 'E' is IDE.
The devices based on the CDD2000 are flash upgradeable (you should be
able to use Philips CDD2000 images).
CAVEAT EMPTOR - CR-2600TE and CR-2801TE. These drives do not support
disc-at-once recording. Like the Sony 926 and 928 units, they claim to
support track-at-once with nearly imperceptible gaps instead. Ahead's Nero
can reportedly do this with the CR-2801TE.
The CR-4801TE with firmware 2.01 and later supports DAO recording. Earlier
versions do not. If your recording software doesn't believe that the drive
is capable of DAO, you may need to update the software to a version that is
aware of the changes in the firmware update.
Later drives, such as the 4802TE, do support DAO.