Tripp Lite's BCPERS450 standby UPS system offers surge suppression and long lasting battery support for personal computers, internetworking equipment and other sensitive electronics. Internal UPS circuits support entry level PC systems for up to 15 minutes during power failures and brownouts so that connected equipment can be shutdown without data loss. Includes 3 UPS supported outlets. USB port with included cable and PowerAlert monitoring software enables safe unattended system shutdown in the 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. Built-in set of 3 front panel LEDs indicate line power, battery power and battery low/replace status. 450VA/280 watt power handling ability supports entry-level PCs, point-of-sale equipment, small business phone systems and audio/video components. Offers 4 minutes battery runtime with a full load of 450VA and 15 minutes with a half load of 225VA. Supports user battery replacement via built-in access panel. 2 year warranty. $100,000 connected equipment insurance (USA, Puerto Rico, & Canada only).