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Mini USB 2.0 to RS-232 DB-9 Serial Adapter w/ 10kV Surge Protection & 3ft. USB Extension Cable - Coolgear
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StarTech.com DB9 RS232 Serial Null Modem Adapter - M/M - 1 x DB-9 Male - 1 x DB-9 Male - Yuletide Office Solutions
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StarTech.com StarTech.com DB9 to DB25 Serial Cable Adapter - F/F - 1 x DB-9 Female - 1 x DB-25 Female - Yuletide Office Solutions
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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,
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USB/Serial Converter [FT232RL] : ID 18 : $17.50 : Adafruit Industries, Unique & fun DIY electronics and kits
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Amazon.com: TECHTOO 4 Port Professional FTDI CHIP USB to RS232 Serial Cable DB9 Serial Adapter Converter 9-Pin Male to Male with Hexnuts : Electronics
C2G DB9 Male to DB25 Female Serial Adapter 1 Pack 1 x 9 pin DB 9 Serial Male 1 x 25 pin DB 25 Serial Female Beige - Office Depot
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