Hello: Software to do what? This handy model is amateur radio and is programmed using the keyboard and here is the manual in Spanish https://www.yaesu.com/downloadFile.cfm?FileID=6880&FileCatID=151&FileName=FT%2D270E%5FOM%5FSPA%5FEH022N332. pdf & FileContentType = application% 2Fpdf. The manufacturer does not provide any software to program unless it appears on its own WEB. Regards -------------------------------------------------- -------------------------------------------------- --------------------------- On the part of the manufacturer what is contemplated is Cloning, page 66 of the manual in Spanish when it comes to making configurations of several devices with the same data and serially. -------------------------------------------------- -------------------------------------------------- ----------------------- You only need two 3.5mm plug and four sections and you connect Data with Data and GND with GND of each one of them and that's it. I suggest that the cable be of the shielded audio that contain maya and "live" or central connector ..