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6ft (1.8m) DB9 F/F Serial RS232 Null Modem Cable - Black | Serial RS232 | Computer Cables | USB and PC
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PL2303TA USB RS232 to DB9 Cross Wired Rollover Null Modem Cable (Null Modem pinout: 2-TXD, 3-RXD 5-GND, 7-CTS. 8-RT) : Amazon.in: Computers & Accessories
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Modem cellulare - WCDMA/UMTS, RS232 Modem | M100 - Shenzhen Wlink Technology Co., LTD - RS232 / 3G / GSM
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Amazon.com: StarTech.com DB9 RS232 Serial Null Modem Adapter - F/F - Null modem adapter - DB-9 (F) to DB-9 (F) - NM9FF : Electronics
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