Audio & Video Cables & Adapters
6ES7972-0CB20-0XA0 PC For Siemens USB Cable Adapter S7-200/300/400 RS485 Profibus/MPI/PPI 9-pin
6ES7972-0CB20-0XA0 PC For Siemens USB Cable Adapter S7-200/300/400 RS485 Profibus/MPI/PPI 9-pin
https://www.bizrate.co.uk/audio_videocables_adapters/6es7972-0cb20-0xa0-pc-for-siemens-usb-oid27441660798.html