The Apex Pinnacle Micro 4.6 GB Optical Hard Drive is a drive that was marketed during the 1990's. Very few fully working models still exist. Most sold on the internet are dead on arrival! The drive reads and writes to non ISO standard disk such as: DOT (Digital Optical Technology) OMR 4.2 GB Disks or Mitsubishi 4.6 GB Optical Disk Cartridges and many more.
This Optical Hard Drive has a maximum capacity of 4.6 Gigabyte per disk and supports direct overwrite media such as 5.25" Optical Disks. The Drive supports Sony, Mitsubishi, Verbatim, MCC, 3M, Hitachi, Maxell and DOT Media at both ISO, Non ISO and ANSI levels.