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These are the first generation of floppy disc drives from Vortex. They came in variants having either a single ("S" variant) or two ("D" variant) 80-track drives (BASF 6138). Additionally, a 3" [[Amstrad Disk Drive|FD-1]] can be connected as third drive, ie. unlike most other CPC disk interfaces it supports more than 2 drives. With [[VDOS]] only two drives are accessible at one time. The drives interfacing with their own FDC can be used with the CPC 6128 to use different I/O ports (see below).

* '''F1 - S''' Single 5.25" drive with power supply connected via ribbon cable to interface with [[FDC|NEC765]] and [[VDOS]] 1.0 or 2.11

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An upgrade was available which allowed to upgrade a single -S drive to a dual -D drive.

The Vortex S- and D-drives were originally intended as upgrades to CPC 464 setups already having a DDI-1/FD-1. This adapter allowed to continue using the 3" drive. Since only two drives can be used simultaneously, the drive had to be selected manually using a RSX command.

These are basic and less expensive ''low-capacity'' drives and were meant to be directly connected to a CPC 664/6128 or CPC 464 with DDI-1 (ie. on computers that already provide a floppy controller). Since these drives do not ship with a special controller, they do rely fully on AMSDOS and thus only 40 tracks can be accessed.

* '''F1 - Z''' Single 5.25" drive with power supply with ribbon cable (does not come with interface containing FDC or [[VDOS]])

These are the latest drives from Vortex for use on CPC 664/6128 or CPC 464 with DDI-1 (ie. on computers that already have a FDC). Only single-drive variants were available. The |S command (for accessing a third drive) is no longer used, the new |X command allows to swap drive A and B (same as [[X-DDOS]] from Dobbertin). These drives are well designed and strong. They are housed in a metal case with power supply (which has good protection with fuses) and have good quality drive mechanisms. The drive has jumpers on it that can be configured as needed.

* '''F1 - X''' Single 80 track, Double Sided, 5.25" drive with power supply and ribbon cable which connects to interface containing [[VDOS]] 2.0

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The "X-Modul" adds a RS-232 interface to -X drives.