I have an I-PAC 2, connected to my PC via USB with a PS/2-USB cable shipped with the I-PAC when I bought it (i am figuring it is officially from the I-PAC, not some 3rd party thing). When I connect it to my PC, WinIpac does not recognize the board, simply saying "No board connected". However, the I-PAC is recognized as a keyboard by the OS, I can use my buttons to write in a text file.
The reason I want to use WinIpac is to configure my I-PAC to work as individual buttons and not as keyboard, which I need to do to have it work with RetroPie, so I am kind of in a dilemma and not sure what to do. Also, I do not think I have a PS/2 cable, like wtf.