DVD-RAM VS. Minidisc. Brothers or cousins? The DVD-RAM case looks like a Minidisc case. But the resemblance stops there, it is not a magneto-optical disc. : r/minidisc
LG GSA-4040B DVD±RW/DVD±R DVD-RAM Drive Review
4) TDK DVD-RAM 5.2Gb 52DY1 Double Side Type 1 REWRITABLE 5.25" DISK NOS SEALED 20356477264 | eBay