YCS basics 1 Foot DB9 9 Pin Serial / RS232 Male/Female Extension Cable

StarTech.com Right Angle DB9 to DB9 Serial Cable Adapter Type 1 - M/F (GC99MFRA1)

StarTech.com Right Angle DB9 to DB9 Serial Cable Adapter Type 2 - M/F (GC99MFRA2)

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

SIENOC 5 Pcs Serial RS232 9 Pin Gender Female to Female Adapter Changer

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

Your Cable Store 1 Foot DB9 9 Pin Serial Port Cable Male / Male RS232

SF Cable, 3 ft DB9 M/F Serial Extension Cable RS232 Black Color

TRENDnet TU-S9 USB to Serial Converter

StarTech.com 10-Feet Straight Through Serial Cable - M/F (MXT10010)

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