Built-in Automatic Voltage Regulation boosts brownouts and reduces overvoltages back to usable 120V nominal levels. Includes four widely spaced transformer outlets to accommodate for larger plugs. Provides battery derived AC output during blackouts for maximum peace of mind. 750VA / 450 watt power handling ability supports a variety of PCs, workstations and other sensitive electronics. Integrated single line Tel/DSL line surge suppression protects modem, fax machine, or cordless phone for exceptional security. Features USB port, PowerAlert software and cabling to offer safe, unattended shutdown without data loss during extended outages. System VA: 750 VA; Backup Time at Full Load: 750 Volts @ 3 minutes; Backup Time at Half Load: 375 Volts @ 10 minutes; Automatic Voltage Regulation (AVR): Yes.