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Amazon.com: StarTech.com USB to Serial RS232 Adapter - DB9 Serial DCE Adapter Cable with FTDI – Null Modem - USB 1.1 / 2.0 – Bus-Powered (ICUSB232FTN) : Electronics
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Amazon.com: DB9 Male / DB9 Female Null Modem Mini Adapter : Electronics
Amazon.com: DB9 Null Modem Adapter Male to Female Slimline Data Transfer Serial Port Adapter 5 Pack : Electronics