This document is the user guide for EaseUS Todo Backup. It provides an overview of the product, instructions on how to use the manual, and details about the new features in version 4.6. It also includes information on hardware and system requirements, supported file systems and hard disk types, installation and uninstallation, and a comparison of different editions. The document covers backup, recovery, and cloning operations, including system backup, disk/partition backup, file backup, schedule backup, and backup management.