6ft DB9 Null Modem Male/Female Serial Cable, Black - CablesOnline NM-506

6FT DB9 9 Pin RS232 Serial Null Modem Male to Female Extension Cable Adapter

6ft DB9 Female to DB25 Male Serial Null Modem Cable, CablesOnline NM-306

6ft DB9 Female to DB25 Female Serial Null Modem Cable - CablesOnline NM-606

3ft DB9 Null Modem Male/Female Serial Extension Cable - CablesOnline NM-503

Kentek 6' Feet DB9 Null Modem Serial Extension Cable Cord RS-232 Male/Female

Kentek 6 ft Null Modem DB9 Serial Cable Male to Female RS-232 Data

Serial RS232 DB9 9Pin Female to DB25 25Pin Male 6ft AT Modem Cable 28 AWG