550VA/330W Standby Battery Backup Uninterruptible Power Supply (UPS) System uses simulated sine wave output to safeguard workstations, networking devices, and home entertainment equipment EIGHT NEMA 5-15R OUTLETS: Four battery backup & surge protected outlets; Four surge protected outlets; INPUT: NEMA 5-15P right angle, 45 degree offset plug with five foot power cord LED INDICATORS: LED status lights indicate Power-On and Wiring Fault USB CONNECTIVITY: HID compliant USB port enables full integration with built-in power management and auto-shutdown features of Windows, Linux and Mac OS X 3-YEAR WARRANTY – INCLUDING THE BATTERY; $100,000 Connected Equipment Guarantee and FREE PowerPanel Personal Edition Management Software (Download)