APC Smart-UPS On-Line, 4500 Watts /5000 VA, Input 230V / Output 230V, Interface Port Contact Closure, RJ-45 Serial, Smart-Slot, USB (Universal Serial Bus), Extended runtime model LCD graphics display Text & mimic diagrams that display modes of operation, system parameters & alarms. 10/100 Base T Connection Connect the device to a network using a 10 or 100 Base T connection Green mode Patent-pending operating mode that bypasses unused electrical components in good power conditions to achieve very high operating efficiency without sacrificing any protection. Battery failure notification Provides early-warning fault analysis on batteries enabling timely preventive maintenance Automatic internal bypass Supplies utility power to the connected loads in the event of a UPS power overload or fault. Scalable runtime Allows additional run time to be quickly added as needed. Intelligent battery management Maximizes battery performance, life, & reliability through intelligent, precision charging. Hot-swappable batteries Ensures clean, uninterrupted power to protected equipment while batteries are being replaced Automatic restart of loads after UPS shutdown Automatically starts up the connected equipment upon the return of utility power. Temperature-compensated battery charging Prolongs battery life by regulating the charge voltage according to battery temperature.