Model: Epson Perfection 1640SU Photo
Operating System: Windows Vista (Note: might work with other versions of this os.)
This self-extracting file contains the Epson TWAIN 5 Driver v5.71A for Windows Vista 32-bit Edition. This file extracts to your hard drive and is placed in C:\EPSON\epson12242_twain5_driver_571a. Installation instructions: Double-click the downloaded file. Click Continue in the User Account Control dialog box. Click Install this driver software anyway in the Windows Security dialog box. Click Locate and install driver software (recommended) in the Found New Hardware dialog box. Notes: A TWAIN compliant Windows Vista 32-bit supported scanning application is required. The buttons on the scanner and the HELP functionality in this driver are not supported in Windows Vista.