4 Port USB to DB9 RS232 Serial Adapter Hub Industrial DINRail and Wall Mountable – USB to RS 232 Serial Adapter 4-Port – USB to Serial Converter

8 Port USB to DB9 RS232 Serial Adapter Hub Industrial DINRail and Wall Mountable – USB to RS 232 Serial Adapter 8-Port – USB to Serial Converter

Modular adapter – Serial – DB-9 (F) – RJ-45 (F)

USB C to Serial Adapter – RS232 / DB9 Cable – Windows / Mac / Linux Compatible – Bus Powered – USB C Serial Converter

USB C to Serial Adapter with COM Retention – USB C to Serial Converter – USB C to DB9 – USB C to RS232 – USB C to Serial with COM Port Retention – RS 232