DB9 Male / DB9 Female Null Modem Mini Adapter

Bargain Cable DB9 Female / DB9 Female Null Modem Mini Adapter

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

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

BeElion 2PCS Serial RS232 DB9 Pin Gender Male to Male Adapter,Null Modem Gender Connectors

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

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 6 ft Straight Through Serial Cable - DB9 F/F

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

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

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