StarTech.com 6ft Straight Through Serial Cable - DB9 M/F (MXT100) Gray - M/F

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 DB9 RS232 Serial Null Modem Cable F/M - DB9 Male to Female - 9 pin Null Modem Cable - 1x DB9 (M), 1x DB9 (F), Black

Tripp Lite Keyspan High-Speed USB to Serial Adapter, PC & Mac (USA-19HS)

DB9 null modem male to female slimline data transfer serial port adapter 2 Pack

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

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

Top-Longer 9 Pin DB9 Female to Female/Male to Male Mini Gender Changer Coupler Adapter Connector Pack of 4

Tripp Lite Null Modem Serial RS232 Cable (DB9 F/F) 6-ft. (P450-006)

Sysly DB9 Male and DB9 Female D-SUB Adapter Plate Connector RS232 Serial to Terminal Board Signal Module

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