Connects any RS232 serial device with DTE DB9 to PC with DB9 serial port. This null modem cable also allows you to transfer files between two computers using its DB9 serial port as well as all RS232 DTE to DTE connections. Works with file transfer software that comes free with MS DOS & Windows and Laplink software. 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: 1,6,8-7 / 2-3 / 3-2 / 5-5 / 7-1,6,8. (Connectors: DB9 Female to Female; Length: 6ft)