The .dll file is a shared library file that is associated with a programming interface for a semi-conductor chip. The chip drivers come in two different flavors: One is a .dll (for Windows) and the other is a shared library file for Linux. The name of the Linux file is "nameofFile.so.0.4.5" The company that makes these drivers (FTDI) says that the API's for both OS's are practically the same (except you obviously cannot use WIN32 functions when running on Linux). I wish I knew more about Linux drivers...
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