Buy RS232 USB to RS232C Serial Port Adapter - CNC Specialty Store
USBSEAD | i-tec USB to Serial RS232 Adapter | i-tec
USB/Serial Converter [FT232RL] : ID 18 : $17.50 : Adafruit Industries, Unique & fun DIY electronics and kits
Aten 35cm USB to Serial Converter - UC232A - -
USB to RS232 Converter Cable 1.0 meter - UMC-201
Sabrent USB to Serial Cable Adapter (SBT-USC1M) | SBT-USC1M
USB RS-232 Serial Adapter USB Serial Adaptor Converter Prolific Chip
USB to Dual RS232 Adapter / Converter – CommFront
USB to Serial Converter Cable QI – PMI
PRO Single Port USB to Serial Adapter with Activity LED 3ft.
IOGEAR - GUC232A - USB to Serial Adapter
USB serial RS232 converter mini, Transparent | Wentronic
Manhattan USB to 1 Serial Device Converter Retail Pkg. - Office Depot
USB to Serial Converter - TRENDnet TU-S9
StarTech.com ICUSB2321X USB to Serial Adapter - 1 Port - COM Port Retention - Texas Instruments TIUSB3410 - USB to RS232 Adapter Cable - Newegg.com
USB to Serial adapter, USB to RS232 converter
Amazon.com: TRENDnet USB to Serial 9-Pin Converter Cable, Connect a RS-232 Serial Device to a USB 2.0 Port, Supports Windows & Mac, USB 1.1, USB 2.0, USB 3.0, 21 Inch Cable Length,
USB 2.0 RS-232 Serial Adapter 16 Inches w/ LED Indicators
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USB to RS232 Adapter / Converter – CommFront
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USB to RS232 DB9/DB25 Serial Adapter - Serial Cards & Adapters
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Dual port RS232 Serial to USB adapter for RS232 data conversion.