? 750VA/600 watt online double-conversion 2U rack/tower UPS ? 100/110/120V Plus /-2-Percent output at 50/60Hz high efficiency economy mode option ? Expandable runtime Hot-swap batteries; 13.5 in/34.3cm installed depth ? USB RS232 and EPO ports; Pre-installed SNMPWEBCARD ? 2-year limited warranty and $250000 Ultimate Lifetime Insurance (U.S. Canada and Puerto Rico)