StarTech.com DB9 RS232 Serial Null Modem Adapter - M/M - NM9MM - Serial Cables - CDW.ca
FTDI Chipset Cross Wired USB Serial DB9 FT232R USB RS232 Null Modem Cable Pc Control TV Cable (Standard DB9 COM port pinout(pc(host) with usb to RS232 terminal device(slave)) : Amazon.com.au: Computers
RS232 serial null modem cable wiring and tutorial - Lammert Bies
2m Serial Null Modem Cable DB9 Female to Female - Lindy Australia
Appendix > Standard RS232 Cables
RS-232 Null modem cable
Crossover or "Null Modem" vs. Straight Through Serial Cable - Decisive Tactics, Inc.
Building the Null Modem Cable
DTech DB9 RS232 Serial Cable Male to Female Extension Null Modem Cord Cross TX RX line for Data Communication (5 Feet, Black) : Amazon.com.au: Computers
PC Null Modem / RS232 serial data transfer cable / lead, 9-pin DB9 Female socket | eBay
RS-232 Null modem cable
Astrotek 3m Serial RS232 Null Modem Cable | AT-DB9NULL-FF-3