Amazon.com: StarTech.com 10' RS232 Serial Null Modem Cable - Null modem cable - DB-9 (F) to DB-9 (F) - 10 ft (SCNM9FF) : Electronics
Amazon.com: SF Cable, 6 ft DB9 F/F Null Modem Cable RS232 : Electronics
Serial Port and Modem Cables
StarTech.com DB9 RS232 F F Serial Null Modem Cable, Black, 2m (SCNM9FF2MBK)
StarTech.com Serial RS232 Null Modem Cable, DB9, F-M, 10ft (SCNM9FM)
DB25 Male to DB9 Female Serial RS232 Null Modem Cable
RS232 serial null modem cable wiring and tutorial - Lammert Bies
Crossover or "Null Modem" vs. Straight Through Serial Cable - Decisive Tactics, Inc.
Amazon.com: DTech DB9 RS232 Serial Cable Female to Female Null Modem Cord Full Handshaking 7 Wire Crossover for Data Communication (1.5 Feet, Black) : Electronics
Startech .com 1m Black DB9 RS232 Serial Null Modem Cable F/FConnect your serial devices, and transfer your files1m DB9 Null Modem Cable... SCNM9FF1MBK - Corporate Armor