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12in. USB 2.0 to RS-232 DB-9 High Speed Serial Adapter w/ Surge Protection & FTDI Chipset - Coolgear
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Amazon.com: Tripp Lite Keyspan High-Speed USB to Serial Adapter, PC & Mac, USB-A to DB9 RS232 Male, 3 Foot / 0.91 Meter Cable, 3-Year Warranty (USA-19HS) : Electronics
C2G 1.5ft USB to Serial Cable - USB to DB9 Serial RS232 Cable - M/M - 26886 - USB Adapters - CDW.com
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