Drivers (ver 2.04.10) for DSS20, DSS25, SEPI and SEMUTS (Win XP/Vista) Download and unzip the package locally. (DSS_SEPI_SEMUTS_signed_usb_driver.zip) Run DPInst.exe and follow the steps in the wizard to install the drivers. Please note that the bundled DPInst.exe only works with 32-bit OS.