Amazon.com: DTech 1.5ft COM Port Serial Cable Male to Female RS232 Extension 9 Pin Straight Through Cord (0.5 Meter, Black) : Electronics
C2G 1.5ft USB to DB9 Serial Cable - RS232 Adapter Cable - serial adapter - USB - RS-232 - 26886 - USB Adapters - CDWG.com
StarTech 10' DB9 RS232 Serial Female to Female Null Modem
Tripp Lite 5ft USB to Serial Adapter Cable USB-A to DB9 RS-232 M/M 5' - serial adapter - USB - RS-232 - U209-000-R - USB Adapters - CDW.com
Amazon.com: StarTech.com 3m Black Straight Through DB9 RS232 Serial Cable - DB9 RS232 Serial Extension Cable - Male to Female Cable (MXT1003MBK), 10 ft / 3m : Electronics
12in. High-Speed USB to RS-232 Serial DB9 Adapter Cable - Windows 7/8
USB Serial RS232 Single Port PRO Adapter with Activity LED 3ft