Rocstor USB 2.0 Type-A to RS-232 DB9 Serial Null Modem
25ft Null Modem Cable, UL, DB9 Female
Rocstor Premium 5ft 1 Port USB to Null Modem RS232 DB9 Serial DCE Adapter Cable with FTDI
Amazon.com: StarTech.com USB to Serial RS232 Adapter - DB9 Serial DCE Adapter Cable with FTDI – Null Modem - USB 1.1 / 2.0 – Bus-Powered (ICUSB232FTN) : Electronics
Amazon.com: StarTech.com 10' RS232 Serial Null Modem Cable - Null modem cable - DB-9 (F) to DB-9 (F) - 10 ft (SCNM9FF) : Electronics
StarTech.com USB to Serial Adapter Null Modem FTDI USB UART Chip DB9 9 pin USB to RS232 Adapter - Office Depot
USB To Null Modem FTDI Serial Adapter, 18-in. | Eaton
Building the Null Modem Cable
RS232 serial null modem cable wiring and tutorial - Lammert Bies
Rocstor Premium 5ft 1 Port USB to Null Modem RS232 DB9 Serial DCE Adapter Cable with FTDI
6 FT Null Modem Cable - DB9 M/F | Computer Cable Store
Serial Cable DB9, Female/Female, 6ft - Null Modem Cable
Null Modem Cable for Criticare Monitors 6' to 10' ft or 15' to 25' ft