CC312-20 - 20ft DB9 Female to DB25 Male Serial Modem Cable
New Serial Null Modem Cable DB9F to DB9F Female DB9 Connector pin 1 to pin 1 RS232 to RS 232 Cross data CABLE|modem cable|null modem cablenull modem - AliExpress
10 Foot DB9 Female / DB25 Male Null Modem Serial Cable RS232