=== Non-Standard Interfaces ===
Interfaces that use other chipset or other I/O ports as than Amstrad's official interface:
* [[Aleste 520EX]] (a CPC clone with built-in RS232, intended for serial mouse)
* [[AMSSIO]] (RS232 interface) (DIY)
* [[CPCI RS232 Interface]] (DIY)
* [[KDS Electronics Serial Interface|KDS Serial Interface]] ([[KDS Electronics]])
* [[RS-232 para Amstrad]] ([[MHT Ingenieros]])
* [[Schneider RS232 Interface]] ([[Schneider]])
* [[Simple RS232 for Printer usage]] (DIY) (one-directional, transmit only)
* Cirkit twin-port serial interface (resold by [[Microstyle]])
* [[Data Media Disc System]] (disc drive with built-in RS232 interface) ([[Data Media]])
* [[RS-232 para Amstrad]] ([[MHT Ingenieros]])
* [[Dual RS232]] ([[Timatic Systems]])
* [[Unknown RS232 Interfaces]]