Automatic Voltage Regulation (AVR); Energy efficient, reduce energy and cooling costs; Delivers clean sinewave output; Provides more real power (watts) to protect more equipment with a Unity power factor (VA=W); LCD display for real-time status and measurements; Long backup time with up to 4 optional EBM; Meter energy consumption (down to the managed outlet groups); Versatile product for rack or tower installation; 1 slot for optional com card (Network management card, Relay card or Network and Industrial card); Compatible with Virtual environments (VMware, Hyper-V, Citrix Xen, Redhat); 1 USB port + 1 serial port