Monoprice 101203 DB9 M/F Null Modem Mini Type (101203)

Monoprice DB9 Null Modem Mini Type - Male to Female, Orange

StarTech.com 10' RS232 Serial Null Modem Cable - Null modem cable - DB-9 (F) to DB-9 (F) - 10 ft (SCNM9FF)

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