D3126 Hard Disk Unit

These units achieved high recording density by using the first plated disk media for 3.5-inch, ensured reliability at high track densities by employing the same embedded servo system for head positioning control as the D5126 5-inch fixed disk, and achieved the highest capacity in Japan at the time for a 3.5-inch fixed disk (25MB with the D3126) in almost the same size as a 3.5-inch micro floppy disk unit.