APC Smart-UPS RM, 1000VA/670W, Input 230V/ Output 230V, Interface Port DB-9 RS-232, SmartSlot, USB, Rack Height 2 U / Automatic Voltage Regulation (AVR), Built-in SmartSlot, Hot Swap Batteries, Intelligent Battery Management, Overload Indicator, Rack Mount, Replace Batt Indicator, Software, USB Connectivity, User Replaceable batteries / Includes: CD with software, Rack Mounting support rails, Smart UPS signalling RS-232 cable, User Manual, USB cable