Tripp Lite's SM750UNAFTA line-interactive UPS offers complete protection for PCs, workstations and other sensitive electronics in a compact upright tower housing. Prevents data loss and system downtime by providing battery-supported AC output during blackouts and Automatic Voltage Regulation (AVR) during brownout conditions. Includes 6 output receptacles, 3 with full battery support and surge suppression to power computers, monitors and other vital system components from loss of power. 3 additional outlets with surge suppression-only are ideal for printers and other accessories not requiring battery support. Single-line telephone / Ethernet suppression jacks protect modems, fax machines, cordless phones or other equipment with a DSL or standard dialup RJ-11 phone line or RJ45 Ethernet connection. USB port with included cable and free downloadable PowerAlert monitoring software enables safe unattended system shutdown in case of extended power failure. HID-compliant USB interface enables integration with built-in power management and auto-shutdown features of Windows and Mac OS X. Audible alarm and front panel LEDs offer status information regarding line and battery power operation. Front panel switches control power off/on status, self-test and alarm silence functions. 750VA / 450 watt power-handling ability supports entry-level PCs, home theater equipment and other sensitive electronics during power failures.