File:vortex-m1-x-drive-details.png|Vortex M1-X insides, close-up from the backside
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=== X-Modul (RS232-C Interface) ===
The "X-Modul" adds a RS232-C interface to -X drives. It is suspected to be at least partially compatible with Amstrad/Pace interfaces.
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VDOS-internal.JPG|X-Modul
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* [[Media:Vortex RS232-C Manual.pdf|Vortex RS232-C Manual]] {{DE}} (pdf)
==== I/O Ports ====