Connects any RS232 serial device with DTE DB25 to PC with DB25 serial port. This RS232 serial null modem cable, works for all standard serial applications and also allows you to transfer files between two computers using its serial port. Works with file transfer software that comes free with MS DOS & Windows and Laplink software. This cable has molded ends with thumbscrews and inner hood soldered 360 degrees to the connector for complete end to end shielding. PinOut: 1-1 / 2-3 / 3-2 / 5,6,8-20 / 7-7 / 20 - 5,6,8 / G-G. (Connectors: DB25 Female to Female; Length: 6ft)