Null modem cables and adapters connect two serial devices that require a null modem (cross-wired) configuration. This 3.05 m cable has a DB9 female connector on each end. Superior molded cables with foil-shielding offer maximum EMI/RFI protection. Gold-plated connectors and contacts provide superior conductivity. DB9 female to DB9 female Full Handshake Null wiring configuration: 1+6 - 4 2-3 3-2 4 - 1+6 5-5 7-8 8-7. Superior molded cables with foil-shielding for maximum EMI/RFI protection Gold-plated connectors provide superior conductivity Superior molded cables with foil-shielding for maximum EMI/RFI protection Gold-plated connectors provide superior conductivity Null modem cables connect two serial devices that require a null modem configurationSystem Requirements Two serial devices with DB9M connectors requiring a null modem (cross-wired) configuration Package Includes3.05 m Null Modem Gold Cable DB9F to DB9F