RS232 null modem cable

StarTech DB9 - RS232 Serial Null Modem Adapter

Nedis D-SUB 9-Pin Null Modem Cable 2m CCGL52055IV20

StarTech.com 1ft/30cm USB to Null Modem Serial Adapter Cable FTDI RS232 - USB / serial cable - USB to DB-9 - 30 cm

Pro Seriel RS232 9-pins Null Modem - 2m

Pro Seriel RS232 9-pins Null Modem - 2m

InLine - null modem cable - DB-9 to DB-9 - 2 m

InLine - null modem cable - DB-9 to DB-9 - 2 m

InLine - null modem cable - DB-9 to DB-9 - 3 m

InLine - null modem cable - DB-9 to DB-9 - 3 m