Connects any serial modem with DB25 to PC DB9 serial port. This cable has matched impedance, PVC jacket, molded ends with thumbscrews and inner hood soldered 360 degrees to the connector for complete end to end shielding. Pin-Out: 1-8 / 2-3 / 3-2 / 4-20 / 5-7 / 6-6 / 7-4 / 8-5 / 9-22. (Connectors: DB9 Female to DB25 Male; Length: 20ft)