I'm trying to translate this DLL call to autoit UUIRTDRV_API BOOL PASCAL UUIRTGetDrvInfo(unsigned int *puDrvVersion); Retrieves information about the *driver* (not the hardware itself). This is intended to allow version control on the .DLL driver and accomodate future changes and enhancements to the API. Returns TRUE on success, as well as a driver version number in *puDrvVersion. NOTE: This call may be called prior to a call to UUIRTOpen. And that what i wrote in au3 Func USBUIRT_DriverInf