This file contains the Epson PhotoPC 3100Z USB Storage Device Driver. This installer places a folder on your desktop labeled "PhotoPC 3100Z USB Driver v1.0". Open the folder and double-click the installer. Please view the included "README" document for additional information. NOTE: This USB Storage Device Driver is for Mac OS 8.5.1 and 8.6 Only. Your Mac OS 8.6 may already have the necessary USB Storage Device Driver files installed. If during installation, you are prompted that the files you are trying to install are already present, then you do not need to install this driver. Mac OS 9.0 through 9.1 already have the USB Storage Device Drivers built into the OS, and this file is NOT needed. Please do not forget to check with our site as often as possible in order to stay updated on the latest drivers, software and games. Note: Try to set a system restore point before installing a device driver. It will help you restore system if installed driver not complete.