You bought, or want to use, the wrong PC (personal computer) You have a WinDUHows only product. From Cassio An older Mac package is available from Casio, and there is a Mac shareware program called CasioTalk. However, both are long out of date, and there are no plans to update either one.
If you own a copy of WinDUHows you can use Boot Camp, Parallels or VMWare Fusion to run WinDUHows in emulation. . . however. sometimes. under emulation peripherals do not work or can not be accessed.
There are several simple freeware Unix communications programs around (see Sources). None of these programs support all of the latest Casio models and data types. You can CASIF/Win or XLink/Win on the Wine Windows emulator for Unix, including Linux
See this from Cassio about Mac OS.
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