APC X 750VA 230V LCD Rack/Tower Smart-UPS (SMX750I) - Max Configurable Power (Watts): 600 Watts / 750VA, Input frequency: 50/60 Hz +/- 3 Hz Auto-sensing, Output Frequency (sync to mains): 50/60 Hz +/- 3 Hz Sync to mains, Number of Power Cords: x 1, Interface Port(s): RJ-45 Serial, SmartSlot, USB, Battery Slots Empty: x 1, Included Battery Modules: x 1, Expected Battery Life: 3 - 5 years