A CD-ROM drive that holds a small number of CD-ROMs for individual use on a desktop computer. Although it can swap discs, it typically contains only one drive and can only read one at a time. See
CD-ROM server.
Four-Disc Changer
This Nakamichi MJ-4 changer holds four discs in the same housing as a single-disc unit. The blue disc is currently at the read head, while the others wait in storage. (Image courtesy of Nakamichi America Corporation.)