FUJITSU TWAIN32 Version 9.18.911 Device drivers, included in the TWAIN Toolkit are downloadable from this page. Supported Scanner Models fi-4340C OS Microsoft® Windows® 2000 Professional Microsoft® Windows® XP Home Edition (32bit) Microsoft® Windows® XP Professional (32bit / 64bit) Microsoft® Windows Server™ 2003 Standard Edition (32bit / 64bit) Microsoft® Windows Server™ 2003 R2, Standard Edition (32bit / 64bit) Microsoft® Windows Vista™ Home Basic (32bit / 64bit) Microsoft® Windows Vista™ Home Premium (32bit / 64bit) Microsoft® Windows Vista™ Business (32bit / 64bit) Microsoft® Windows Vista™ Enterprise (32bit / 64bit) Microsoft® Windows Vista™ Ultimate (32bit / 64bit) Microsoft® Windows Server™ 2008 Standard (32bit / 64bit) Microsoft® Windows Server™ 2008 R2 Standard (64bit) Microsoft® Windows® 7 Home Premium (32bit / 64bit) Microsoft® Windows® 7 Professional (32bit / 64bit) Microsoft® Windows® 7 Enterprise (32bit / 64bit) Microsoft® Windows® 7 Ultimate (32bit / 64bit)