WORK THOUGH SHORT BLACKOUTS & MAINTAIN A NETWORK CONNECTION / SAVE FILES SAFELY DURING LONGER BLACKOUTS: 900VA / 475W LCD Battery Backup Uninterruptible Power Supply (UPS) provides up to 50 minutes of runtime for an entry level PC systems and 10 min of half-load runtime 8 OUTLETS PROTECT DESKTOPS & ALL PERIPHERALS: 4 Outlets provide UPS Power Backup & Surge Protection (for desktop, monitor, LCD, keyboard, external hard drive, wireless router, IoT device); 4 Outlets offer Surge Protection Only (ideal for printers and other electronics that are not essential in a blackout) AVR CORRECTS BROWNOUTS & OVERVOLTAGES WITHOUT USING BATTERY POWER: Otherwise known as Automatic Voltage Regulation, this conserves battery power for critical blackouts. Also features TEL/DSL/Ethernet protection. FREE MANAGEMENT SOFTWARE / USER REPLACEABLE BATTERIES: USB port & free software enable unattended system shutdown and power management. Batteries are fully hot-swappable / user-replaceable allowing you to extend the life of your UPS if the batteries are depleted after the 3-year warranty 3-YEAR WARRANTY, $200,000 INSURANCE: 3-Year Limited Warranty and $200,000 Ultimate Lifetime Insurance for connected equipment