Tripp Lite 1500VA Smart UPS Battery Back Up, 900W Rack-Mount/Tower, LCD, AVR, USB, DB9 (SMART1500LCD) WORK THOUGH SHORT BLACKOUTS & MAINTAIN A NETWORK CONNECTION / SAVE FILES SAFELY DURING LONGER BLACKOUTS: 1500VA / 900W Smart LCD Battery Backup Uninterruptible Power Supply (UPS) provides up to 11.8 min of half-load runtime / 4.4 min of full load runtime 8 OUTLETS PROTECT SMALL SERVERS, DESKTOPS & ALL PERIPHERALS: 8 Outlets provide UPS Power Backup & Surge Protection (for small server, desktop, monitor, LCD, network workstation, audio/video components, media center, keyboard, external hard drive, wireless router, IoT device) 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 UPS housing material: ABS . FREE MANAGEMENT SOFTWARE: USB port & free software enable unattended system shutdown and power management.;High 98% efficiency in line power mode 3-YEAR WARRANTY, $250,000 INSURANCE: 3-Year Limited Warranty and $250,000 Ultimate Lifetime Insurance for connected equipment