A free image viewer that can acquire TWAIN images.
If you cannot find the official package, third-party repositories become your next best bet—but proceed with caution (more on safety below). Umax Usc 5800 Scanner Driver For Windows 7 64 Bit
Umax Technologies (now part of ECS Elitegroup) no longer hosts drivers for the USC 5800 on their primary domains. The original FTP servers (ftp.umax.com) have been offline for nearly a decade. A free image viewer that can acquire TWAIN images
The Umax USC 5800 was built for Windows XP. A dual-boot setup guarantees driver compatibility, though security risks remain. though security risks remain.