updated 6-18-14 The device driver and DLL in this folder must be used together. Copy LL_USB2k.dll, LL_USB2k.sys, LL_USB2k.inf, and LL_USB2k.ini into the same folder, either on your diskdrive, floppy, or thumb drive. Connect the USB cable to the PC and 30x device and let the installer know where the files are located. If you are updating, the new version of the driver must be placed in: \YourWindowsDirectory\system32\drivers\ and the DLL must be in the same folder as your application. The .INI files belong in your Windows folder. LL_USB.INI is required for running, but the M30x_SP.ini file is for user convenience only.