The standby ECO900LCDU2 UPS system provides reliable battery backup and AC power protection against blackouts, brownouts, overvoltages, surges and line noise that can damage valuable electronics or destroy data. The 12-outlet 120V battery backup is ideal protection for your home office, media center or professional kiosk, security and small-business phone applications, including computers, routers, printers, HDTVs, Blu-ray players, game consoles, ATMs, security systems and digital signage equipment . Backup support allows you to work through short power failures and gives you enough time to safely save files and shut down your system in case of a prolonged blackout. Backup time varies according to load, but the ECO900LCDU2 should keep an energy-efficient desktop computer with small LCD monitor powered as long as 40 minutes. During normal operation, incoming utility power keeps the replaceable internal battery fully charged, so backup power will always be available . Six 5-15R outlets provide battery backup and surge protection for your computer, monitor and other crucial components. The other six 5-15R outlets provide surge suppression only for printers, speakers and other desktop equipment regarded as non-essential during a blackout . By meeting strict EPA efficiency guidelines, this ENERGY STAR-certified UPS system helps you save money and energy. An ECO power-saving option features four switched ECO outlets (three surge-only, one surge- and battery-protected) that turn off automatically when the device connected to the Battery Backup Master Outlet is powered down or in sleep mode. These outlets are recommended for printers, desk lamps and other non-essential peripherals that don't need to be operational all the time . A 316-joule surge suppression rating protects connected components from the harmful effects of power surges. Dual network data line jacks protect a wired peripheral from dangerous surges on a single 10/100Base-T or dial-up network connection . This USB port connects the ECO900LCDU2 to a computer running Tripp Lite's free downloadable PowerAlert software to enable safe unattended file saves and system shutdown in case of a prolonged power failure. USB cable is included. Battery independent restart ensures automatic UPS power-up without user interaction after lengthy power outages, even when batteries are expired and require replacement. Two USB charging ports are also included for charging smartphones and other portable devices . Various electromagnetic and radio sources found in virtually every home and business can cause disruptive interference on the AC line. Known as EMI (electromagnetic interference) and RFI (radio frequency interference), this line noise is a common cause of performance problems and can lead to incremental hardware damage, data corruption and audio/video transmission problems. The ECO900LCDU2 incorporates technology that filters out disruptive line noise so that it won't affect your equipment .The UPS remains silent in both line and battery backup modes. The alarm sounds only to report low battery, excessive load and fault condition. The LCD touchscreen offers six screens of UPS and site power information when the UPS is operating in on-line or battery power mode. It displays vital voltage, load and battery data, as well as critical fault status.