StarTech.com Slimline Serial DB9 Gender Changer - M/M - Serial gender changer - DB-9 (M) to DB-9 (M) - GC9SM, Silver

StarTech.com Slimline Serial DB9 Gender Changer - M/M - Serial gender changer - DB-9 (M) to DB-9 (M) - GC9SM, Silver

StarTech.com 3m Black Straight Through DB9 RS232 Serial Cable - DB9 RS232 Serial Extension Cable - Male to Female Cable (MXT1003MBK), 10 ft / 3m

DB9 null modem male to female slimline data transfer serial port adapter 2 Pack