Amazon.com: StarTech.com DB9 to DB25 Serial Cable Adapter - F/M - Serial adapter - DB-9 (F) to DB-25 (M) - AT925FM,Beige : Electronics
DB9 Female to DB25 Female Serial RS232 Null Modem Adapter | Serial RS232 | Computer Cables | USB and PC
Amazon.com: CableWholesale DB9 to DB25 Serial Cable, 9 Conductor 28 AWG Single Shielded RS232 Serial Cable, DB9 9 Pin Male to DB25 25 Male Connector Serial Cable, Beige, 6 Foot : Electronics
Quick Reference RS-232 DB9 DB25 Card - Advantech
Serial Cable - 6FT DB9 Female to DB25 Female Null Modem | ShowMeCables.com
DB25 Male to DB25 Female Low Profile Null Modem Adapter - Sealevel
DB25 Female to DB9 Male Serial Adapter
RS-232 Connections That Work
DB9 Male to DB25 Male AT Modem Adapter
RS232 connector pin assignment
10 FT Null Modem Cable - DB9 Male to DB25 Male | Computer Cable Store
DB9 Female to DB25 Male RS-232 Modem Cable, 72 Inch Length - Sealevel