4 Port USB Type-C To Serial Adapter with Per port LED Rx / TX Indicators
USB-C 2.0 to Serial RS-232 Adapter w/ LED Indicators
Amazon.com: ELECABLE USB Type C to RS232 DB9 Serial(9-Pin) Converter Adapter Cable 5ft with a Male to Female Connector, Compatible with MAC OS, Windows, Android, Linux Type C Device (USB C) :