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

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

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

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

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

DTECH DB9 to DB9 RS232 Serial Cable Male to Male Null Modem Cord Cross TX RX line for Data Communication (5 Feet, Black)

Switchcraft EHDB9FFB DB9 Female to Female Panel Mount, Black Finish

StarTech.com 6 ft Straight Through Serial Cable - DB9 F/F (MXT100FF)

DTECH RS232 to RS485 / RS422 Serial Communication Data Converter Adapter Mini-Size

DTECH DB9 9 Pin Serial Cable 6ft Male to Male RS232 Straight Through