YCS basics 100 Foot DB9 9 Pin Serial / RS232 Male/Female Extension Cable

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

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

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

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

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

Your Cable Store 25 Foot DB9 9 Pin Serial Extension Cable RS232

C2G/Cables to Go 09453 DB9 M/F Serial RS232 Extension Cable (50 Feet)

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

StarTech.com DB9 RS232 Serial Null Modem Cable F/F - DB9 Female to Female - 9-Pin RS232 Null Modem Cable, 1-Meter, Black (SCNM9FF1MBK)

StarTech.com DB9 to DB25 Serial Cable Adapter - F/M (AT925FM)