Amazon.com: PNGKNYOCN 4.5 Feet DB9 (9 Pin) Female to DB25 (25 Pin) Male Empty Modem Serial Parallel Printer Cable YOUCHENG for DTE PC Mac Linux Data Transmission Communication : Electronics
6 Foot DB25 25 Pin Serial Port Null Modem Cable Male / Female RS232
Amazon.com: 5ft/1.5m 9 Pins 2-3 (TXD-RXD) Null Modem DB9 Male to Female Serial Cable Adopter(Null Modem, Male to Female) : Electronics
Null modem cable
Kentek 6 Feet FT DB9 Female to DB25 Male Serial RS-232 Cable Adapter Cord AT Modem 28 AWG F/M Molded D-SUB 9 to 25 Pin for PC Mac Serial Device - Walmart.com
StarTech.com 2m Black DB9 RS232 Serial Null Modem Cable F/F - DB9 Female to Female - 9 pin RS232 Null Modem Cable - 2 meter, Black - null modem cable - DB-9 to DB-9 - 6.6 ft