StarTech.com 3ft (1m) USB to Serial Cable, DB9 Male RS232 to USB Converter, USB to Serial Adapter, COM Port Adapter with Prolific IC, 1 (Quantity) - Walmart.com
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
StarTech 10' DB9 RS232 Serial Female to Female Null Modem
SF Cable DB9 Female to 3.5mm Serial Cable (NO GROUND-Pin5), 6 feet - Walmart.com
Amazon.com: JUXINICE Copper Wire Db9 Female to Female Cable 3ft Double Shielded with foil & Metal Braided,Gold Plated D-SUB 9 Pin RS232/RS485 Extension Serial Cable RS485 Cable-Black (Female to Female, 3.3FT 1M) :
1 FT Y Splitter Cable DB9 Male 2 DB9 Females | Computer Cable Store
6 FT Serial Cable - DB9 M/M | Computer Cable Store
6 Feet AT Modem Serial Cable (DB9 Female to DB25 Male) - Micro Connectors, Inc.
Amazon.com: CableWholesale 10 feet Serial Extension Cable, DB9 Male to Female, 28 AWG, RS232 9 Conductor, 1:1, Black, Male to Female Serial Extender for Printer, Modems, Networks, DB9 RS232 Male to Female Cable : Electronics
Null Modem Cable, DB9 Female to DB25 Male, UL rated, 8 Conductor, 6 foot - Walmart.com