Tripp Lite's POS500 standby UPS system offers surge suppression and battery support, ideal for Kiosks, Point-of-Sale, Network Workstations and standalone PC applications. Internal UPS circuits maintain AC output during power failures and severe brownout conditions. Includes 3 battery-supported outlets plus 3 additional surge suppression-only outlets. USB port enables unattended system shutdown. USB interface enables integration with built-in power management and auto shutdown features of Windows and Mac OS X. PowerAlert software available via FREE download from www.tripplite.com. Built-in single line phone suppression with dialup/DSL phone connection. Built-in audible alarm and 5 LEDs. 500VA/300W power handling ability. Compatible with Tripp Lite's Watchdog system to restore operation to locked equipment through soft reboot of OS or hard power off/on reboot of connected equipment. Offers 5 minutes battery runtime with a full load of 500VA and 16 minutes with a half load of 250VA.