J1939-to-DB9 Adapter Cable (Deutsch 9-Pin, Type 2) – CSS Electronics
Tera Grand DB 9-Pin Female to Female Null Modem ADP-NULL-DB9FF
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) :
1.25mm Pitch 9-pin Cable 20cm long 1:1 Cable [Molex PicoBlade Compatible] : ID 4929 : $1.25 : Adafruit Industries, Unique & fun DIY electronics and kits
Amazon.com: uxcell DB9 9 Pin Female to Mini Din 8 Pin Male Converter Cable Cord 2.4M 8Ft : Electronics