This document provides information about choosing and using uninterruptible power supply (UPS) systems. It discusses the different types of UPS systems, including line interactive and online UPS types, and their advantages for different applications like workstations, data centers, and network servers. It also provides specifications for various UPS product lines from FSP, including their capacities, features, and form factors. The document aims to help users select the appropriate UPS type and model for their needs.