Internet-ready protection for PCs, modems and all peripherals against damage and downtime due to blackouts, brownouts and surges. Outlets and built-in telephone/modem/DSL protection safeguard an entire system. Built-in USB port provides automatic unattended shutdown when used with FREE PowerAlert Software (Web download). USB cable included. $100,000 Ultimate Lifetime Insurance. Manufacturer's two-year warranty. Single PC runtime is based on single PC load with 15" flat panel monitor.