Tripp Lite AVR750U ultra compact line interactive UPS offers complete power protection for desktop PCs, network workstations and a wide variety of professional and consumer electronic devices. Uninterruptible power supply/UPS circuits switch to battery backup mode within ms to keep connected equipment running without interruption or data loss during power failures. Automatic voltage regulation/AVR power conditioning maintains smooth, continuous operation of connected equipment during brownouts and overvoltage's. Surge only outlets offer convenient protection for printers and other desktop accessories not requiring battery support. AC and dataline surge suppression prevents connected equipment damage. USB communications port supports built-in power management and auto shutdown features of Windows and Mac OS X or full featured monitoring and data saving auto shutdown options using Tripp Lite free PowerAlert monitoring software.