RS232 serial null modem cable wiring and tutorial - Lammert Bies
Startech .com 2m Black DB9 RS232 Serial Null Modem Cable F/FConnect your serial devices, and transfer your files2m DB9 Null Modem Cable... SCNM9FF2MBK - Corporate Armor
Building the Null Modem Cable
6ft (1.8m) DB9 F/F Serial RS232 Null Modem Cable - Black | Serial RS232 | Computer Cables | USB and PC