* [[Amstrad Serial Interface|RS232C]]+ ([[Amstrad|AMSTRAD]]) RS232 INTERFACE FOR 6128+
* Screen Filter (SBS Data Services Ltd) (1993) Reduce brightness and glare on monitor screen
* [[Screenvision TV Tuner|SCREENVISION ]] (SCREENS) (1986) USE CPC COLOUR MONITORS AS TV* [[Screenvision TV Tuner|Screenvision TV and Video Tuner ]] (Screens Microcomputers and Electronics) (1990) Tv-tuner for Colour monitors (advert on http://www.kultpower.de/archiv/heft_happycomputer_spielesonderteil_1987-03 page 89)
* [[Connector:2nd disc drive (CPC664, CPC6128, CPC6128+)|Second drive lead]] (?) (1986)
* Serial and Parallel Port ([[KDS Electronics]] Ltd)