DB-25 Printer Port Adapter
From CPCWiki - THE Amstrad CPC encyclopedia!
To use a (PC/CPC Plus-style) DB-25 printer cable on a classic CPC, an adapter is needed. This adapter can be build using a female DB-25 socket and a male Centronics plug. Using ribbon cable crimp connectors is the easiest way. Just connect each plug to the ribbon cable and pay attention that you always connect the red wire to pin 1 of the connector. Then cut pin 16 (which is the printer reset pin) using a sharp knife.