StarTech.com USB to Null Modem RS232 DB9 Serial DCE Adapter Cable with FTDI - ICUSB232FTN - Serial Adapters - CDW.com
6ft (1.8m) DB9 F/F Serial RS232 Null Modem Cable - Black | Serial RS232 | Computer Cables | USB and PC
Tripp Lite 6ft Null Modem Serial RS232 Cable Adapter DB9 to BD25 FM 6 Null modem cable DB 9 F to DB 25 M 6 ft molded - Office Depot
Industrial RS232 Digital Optical MODEM Serial to Fiber Converter SM Simplex SC | eBay
3ft (0.9m) Serial RS232 DB9 Null Modem Cable with Low Profile Connectors M/M - In-Wall CMG-Rated | Serial RS232 | Computer Cables | USB and PC
RS232 Serial Wifi Modem for Vintage Computers V4 from The Old Net on Tindie
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
DB9 Female to Female NULL Modem Gender Changer RS232 to RS232 - PLCCable.com - Automation Supplies and PLC Tools
Data Connect - The Right Connection | IGV23 Modem – Data Connect – The Right Connection
1 Foot DB9 Female to DB25 Male Serial RS232 Modem Cable
75ft Serial RS232 DB9 Null Modem Cable with Low Profile Connectors F/F - In-Wall CMG-Rated - BCI Imaging Supplies
StarTech DB9 RS232 Serial Male to Male Null Modem Adapter NM9MM
Tripp Lite 18in USB to Null Modem Serial Adapter FTDI w/ COM Retention M/F 18" - serial adapter - USB - RS-232 - U209-18N-NULL - USB Adapters - CDW.com