3ft DB9 Null Modem Female/Female RS232 Serial Cable - CablesOnline NM-203

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 Null Modem Male/Female Serial Extension Cable - CablesOnline NM-506

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

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

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