Bargain Cable DB9 Female / DB9 Female Null Modem Mini Adapter

C2G 02781 DB9 F/F Serial RS232 Mini Gender Changer/Coupler, Nickel

GearMo USB RS-232 Serial Adapter with LED Indicators Windows 10, 8, 7, Vista, XP, 2000 Support

StarTech.com Slimline Serial DB9 Gender Changer - M/M

Plugable USB to RS-232 DB9 Serial Adapter (Prolific PL2303HX Rev D Chipset)

DB9 Male / DB9 Female Null Modem Mini Adapter

USB to Serial Adapter - Null Modem - FTDI USB UART Chip - DB9 (9-pin) - USB to RS232 Adapter

WOVTE DB9 Female to Female Mini Gender Changer Coupler Adapter Connector Pack of 2

CablesOnline DB9 Null Modem Male to Female Slimline Data Transfer Adapter/Gender Changer , (2-Pack) (AD-N04M-2)

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CableMax RS-232 LED link Tester DB-9 Male to DB-9 Female