Tripp Lite SU5000RT4UHV 5000VA / 5kVA / 4500 watt on-line, double-conversion UPS system offers complete power protection for critical server, network and telecommunications equipment in a single 4U rack/tower compatible housing. Single all-in-one rack / tower housing installs in only 4 rack spaces (4U) with a maximum installed depth of only 20.7 in. / 52.6 cm. Maintains full-time sine wave output within 2% of selectable 200/208/220/230/240V nominal during brownouts as low 100V and overvoltages as high as 300V. Double-conversion operation converts raw input from AC to DC, then resynthesizes output power back to perfect sine wave AC. HID-compliant USB interface enables integration with built-in power management and auto shutdown features of Windows and Mac OS X. Front panel LEDs and LCD readout with scroll controls support front-panel visual monitoring. L6-30P input, plus two L6-30R and two L6-20R outlets.