J1939-to-DB9 Adapter Cable (Deutsch 9-Pin, Type 2) – CSS Electronics
Amazon.com: StarTech.com 3m Black Straight Through DB9 RS232 Serial Cable - DB9 RS232 Serial Extension Cable - Male to Female Cable (MXT1003MBK), 10 ft / 3m : Electronics
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CC317-20-BB - 20ft Premium DB9 RS232 Male to Female Extension Cable