In order to setup the driver you need to download the correct USB driver file and run the installer in the file. Tracey Brown DecemUSB to Serial This is the RS232 driver for the USB adapter. Important note regarding Windows 7 and Vista: The driver MUST be installed 'as Administrator' Right-click the downloaded EXE file and choose Run as administrator. Windows 7 64-bit & 32-bit, Windows Vista 64-bit & 32-bit, Windows XP, Windows 2000, Windows Me, Windows 98. USB-RS232 Serial Converter Driver Download. DIGITUS USB TO SERIAL ADAPTER DRIVER - About this product Product Identifiers Brand.