* [[Panda Electronics Communications Interface Unit]] (dual RS232 plus 8bit printer port) (Panda Electronics Ltd)
* [[RS-232 para Amstrad]] ([[MHT Ingenieros]])
* [[SCA CPC Prolink]] ([[SCAProducts]])
* [[Schneider RS232 Interface]] ([[Schneider]])
* [[Simple RS232 for Printer usage]] (DIY) (one-directional, transmit only)