Tripp Lite's 1000 VA SmartPro Digital UPS offers voltage regulation, surge suppression and long lasting battery support for personal computers, network workstations, home entertainment systems and media centers. Internal UPS circuits support entry level PCs for up to 60 minutes or individual VCR/DVR component for as long as 3 hours during power failures. The UPS prevents data loss, viewing interruptions, lost recordings and loss of component programming. Automatic Voltage Regulation (AVR) circuits regulate brownouts as low as 89 volts back to usable levels without using battery power. The featured USB port enables optional unattended system shutdown without data loss in the case of extended power failure, USB cable included. Built-in single line RJ phone suppression jacks protect modem, satellite receiver or other peripheral with a standard dialup/DSL phone connection. Set of coax jacks protect against surges entering on CATV, satellite or broadcast antenna connections. With the PowerAlert monitoring software, eight NEMA 5-15R outlets, the UPS Offers up to 3 minutes battery runtime with a full load of 1000 VA/500 Watts and up to 14 minutes with a half load of 500 VA/250 Watts.