Large, rotatable LCD front panel displays input voltage, battery capacity, and a variety of operating conditions. Internal UPS circuits provide support for PCs during power failures, enabling a safe shutdown without data loss. Features Automatic Voltage Regulation (AVR) regulates brownouts back to usable levels without consuming battery power. HID-compliant USB interface enables integration with built-in power management and auto shutdown features of Windows and Mac OS X. Expanded network protection includes surge suppression for Ethernet connections as well as phone, fax and modems. Adapts to tower format or rackmount shelf format for exceptional versatility. Protection Type: N/A; System VA: 1500 VA; Backup Time at Half Load: 13 minutes @ 450 Watts; Lines: N/A. Large, rotatable LCD front panel displays input voltage, battery capacity and a variety of operating conditions. Automatic Voltage Regulation (AVR) regulates brownouts back to usable levels without consuming battery power. HID-compliant USB interface works with free power management and auto shutdown features of Windows and Mac OS X. Units easily adapt to tower format or rackmount shelf format for exceptional versatility. Cold start capability allows for temporary AC output during a power failure.