Where can I find the USBXpress SDK installer? For example, the installer that contains SiUSBXp.dll, SiUSBXp.h, etc 


The USBXpress webpage and installer is now refers to USBXpress as Direct Access Drivers.


The installer can be found here:


After installation, the USBXpress SDK files will be located at this default location:



The host side API has not changed, i.e. functions names are remain SI_Write() and SI_Read().


For 8-bit MCUs, the device side API has not changed.

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