Note for Silent Installation 2012.07.19 Silent installation is the installation that runs without the end-user interface. Put the files in the SioCir_Setup_x.x.xxxx_Silent_Install.zip in a folder of the target Windows system and run "setup.exe /s" under such folder to install the Nuvoton CIR Device Driver without the user intervention. Note: It may take tens of seconds to install the CIR device driver once started.