== Z-Drives (180K/side) ==
These are less expensive drives and were meant to be directly connected as B drive to a CPC 464 with DDI-1 or a CPC 664/6128. Since these drives do not ship neither with an own controller or nor a [[VDOS ]] ROM, they do rely fully on AMSDOS and thus only 40 tracks can be accessed. The Z-drives were basically S-drives without a Vortex controller and CP/M license.
=== Variants ===