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Amazon.com: USB to RS232 Adapter with PL2303 Chipset, CableCreation 6.6ft USB 2.0 Male to RS232 Female DB9 Serial Converter Cable for Cashier Register, Modem, Scanner, Digital Cameras, CNC,Black : Electronics
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StarTech.com ICUSB232SM3 USB to Serial Adapter - Prolific PL-2303 - 3 ft / 1m - DB9 (9-pin) - USB to RS232 Adapter Cable - USB Serial - Newegg.com
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