Original Apple UniDisk, model A9M0104, a vintage external floppy disk drive designed for early Apple computer systems. The UniDisk was used to expand storage and software compatibility by allowing the use of additional floppy disk formats, making it an important accessory for both home and professional users during the early Apple II / Macintosh era. Functionality & Compatibility: External floppy disk drive by Apple Model: A9M0104 Used with compatible early Apple systems Enabled users to: Load software from external floppy disks Expand storage options beyond the internal drive Improve usability of early Apple computers Condition: Untested due to lack of compatible hardware Sold as untested / as-is Cosmetic condition consistent with age