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AVR 550VA UPS 120V 5-15P LINEINT 8RCPTL TEL USB Tripp Lite's AVR550U line interactive UPS offers complete protection for PCs, workstations and other sensitive electronics in an attractive ultra-compact, mountable housing. Prevents data loss and system downtime by providing battery supported AC output during blackouts and Automatic Voltage Regulation (AVR) during brownouts and overvoltages. 8 output receptacles, two of which are widely-spaced to accommodate large transformer plugs without blocking outlets. 4 outlets with full battery support and surge suppression protect computers, monitors and other vital system components from loss of power. 4 additional outlets with surge suppression-only are ideal for printers and other accessories not requiring battery support. Single line telephone suppression jacks protect modem, fax machine, cordless phone or other peripherals with a standard dialup or DSL phone line connection. USB port with PowerAlert monitoring software and cabling enables safe unattended system shutdown in the case of extended power failure. HID compliant USB interface enables full integration with built-in power management and auto shutdown features of Windows, Mac OS X and Linux. Audible alarm and front panel LEDs offer status information regarding line and battery power operation. 550VA / 300 watt power handling ability supports entry-level PCs for up to 17 minutes during power failures.