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Insignia™ 1.3' USB-to-RS-232 (DB9) PDA/Serial Adapter Cable, with Prolific Chipset Black NS-PU99501 - Best Buy
USB-RS232-WE-1800-BT_0.0 - Ftdi - Cable, USB A to RS232, Serial Convertor
USB RS-232 DB9 Male Serial Adapter Converter with Prolific Chip
FTDI USB to RS-232 Adapter - Reliable SD cards for industrial Raspberry Pi
USB to RS232 DB9 Serial Adapter Cable - Serial Cards & Adapters | StarTech.com
Amazon.com: Plugable USB to Serial Adapter Compatible with Windows, Mac, Linux (RS-232DB9 DTE Male Connector, Prolific PL2303HX Rev. D Chipset) : Electronics
Cable: for Protos X bus couplers, 9.8ft/3m cable length (PN# PX-USB-232) | AutomationDirect