Connector DB9 RS232 D-SUB Serial Adapters (Female Adapter + Nut)

StarTech.com DB9 to RJ45 Modular Adapter - F/F - Serial adapter - DB-9 (F) to RJ-45 (F) - GC98FF

CableCreation 3.3 FT USB to RS232 Adapter with Prolific PL2303 Chip, Gold Plated USB 2.0 to DB9 Serial Converter Cable for Windows 10, 8.1, 8,7, Vista, XP, Linux and Mac OS X, 1M /Black

SIENOC 5pcs 9 Pin RS-232 DB9 Male to Male 5pcs Female to Female Serial Cable Gender Changer Coupler Adapter Pack of 10

StarTech.com 2m Black Straight Through DB9 RS232 Serial Cable - DB9 RS232 Serial Extension Cable - Male to Female Cable (MXT1002MBK)

Twinkle Bay DB9 Connector to Wiring Terminal RS232 Serial Port Breakout Board Solderless (Male Adapter with Case)

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

DB25 Breakout Board Solder-Free Male Adapter 25-pin Port Adapter to Terminal Connector Signal Module Long Bolts and Nuts with case

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

StarTech.com 3m Black Straight Through DB9 RS232 Serial Cable - DB9 RS232 Serial Extension Cable - Male to Female Cable (MXT1003MBK)

DB25 Breakout Board Solder-Free Female Adapter 25-pin Port Adapter to Terminal Connector Signal Module Long Bolts and Nuts with case