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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
Electronic Master USB to RS232 Cable EM620503 - The Home Depot
USB to Dual RS232 Adapter / Converter – CommFront
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1 Port USB 2.0 to Serial Adapter Cable - Serial Cards & Adapters | StarTech.com
USB to RS232 DB9 Serial Adapter Cable - Serial Cards & Adapters | StarTech.com Italy
Insignia™ 1.3' USB-to-RS-232 (DB9) PDA/Serial Adapter Cable, with Prolific Chipset Black NS-PU99501 - Best Buy
USB RS-232 DB9 Male Serial Adapter Converter with Prolific Chip
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