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
StarTech.com 2m Black DB9 RS232 Serial Null Modem Cable F/M - SCNM9FM2MBK - Serial Cables - CDW.com
TP-LINK DOCSIS 3.0 High Speed Cable Modem,1 x Network (RJ-45) - F-type - Gigabit Ethernet - Desktop - kite+key, Rutgers Tech Store
Monoprice Db9, M/f, Null Modem Mini Type, Used To Connect 2 Computers Or Other Devices For File Transfer : Target
AT Modem Molded Adapter, DB9 F- DB25 F — Tera Grand
15ft (4.6m) DB9 F/F Serial RS232 Null Modem Cable - Black | Serial RS232 | Computer Cables | USB and PC
Amazon.com: SF Cable, 6 ft DB9 F/F Null Modem Cable RS232 : Electronics
Monoprice DB9, F/F, Null Modem Mini Type - Monoprice.com
StarTech.com 10' RS232 Serial Null Modem Cable - Null modem cable - DB-9 (F) to DB-9 (F) - 10 ft - SCNM9FF - null modem cable - DB-9 to DB-9 - 10 ft